ARKANSAS Aerial
Applicator Exam
Mastery | Q&A | FAA 137
& ASPB Standards
PART 0: THE (Table of Contents)
Section Cognitive Tier Focus Area Question Range
PART I N/A The Preview & Critical N/A
Axioms
PART II Tier 1 Foundational Syntax & Q1 – Q15
Application
PART II Tier 2 Complex Application & Q16 – Q35
Simulation
PART II Tier 3 Grandmaster Synthesis Q36 – Q60
PART I: THE Preview
Mastering this document bridges the gap between the rote memorization of Federal Aviation
Administration (FAA) Part 137 regulations and the Arkansas State Plant Board (ASPB) statutory
standards, forging the reader into a top-tier agricultural aviation professional. Precision in legal
compliance, aerodynamic dispersion physics, and pesticide classification translates directly to
elite operational safety, chemical efficacy, and zero-liability commercial practice.
The "Critical Axioms" Cheat Sheet:
● ASPB Classification Hierarchy: Class E and F (Custom Applications like 2,4-D) strictly
require an Operator-in-Charge, a Firm's Custom Applicator Permit, $100,000 in financial
responsibility, and exhaustive 3-year recordkeeping.
● Dicamba 2026 Parameters: Applications are terminated statewide on June 30. Maximum
application limits are 0.5 lbs/acre per application (1.0 lb annually), with mandatory 40
oz/acre volatility reduction agents. Applications are unconditionally prohibited if
temperatures are forecasted at or above 95°F on the day of or the day after application.
● FAA 137.51 Congested Areas: Requires prior written local political approval, public
notice, and Flight Standards District Office (FSDO) plan approval. Single-engine aircraft
are explicitly forbidden from taking off loaded or executing turnarounds over a congested
area.
● Aerial Equipment Hard Decks: The maximum legal application airspeed is 145 mph.
Release height must not exceed 15 feet above the crop canopy. Boom length ratios are
capped at 0.7 of the wingspan for fixed-wing aircraft and 0.8 for rotary-wing aircraft.
, ● Inversion Verification: Morning applications require ambient temperatures at the field to
rise at least 3°F above the morning low. Afternoon applications require temperatures to
decrease no more than 5°F from the afternoon high to verify the absence of an inversion
layer.
ASPB Pesticide Classification Matrix
Classification Primary Chemical / Key Regulatory Source
Target Restraints
Class A General Registered Baseline equipment
Pesticides documentation on
ASPB forms.
Class C High-Risk General Requires annual ASPB
equipment physical
inspection.
Class D Buffer-Dependent Minimum 300-foot
buffer if wind blows
toward desirable
vegetation.
Class E Restricted Use Requires Custom
(Custom) Permit, OIC, $100k
insurance, 2-year
tracking.
Class F 2,4-D & Phenoxys 3-year record retention,
strict county dates,
Hardship Permits.
Class G Glyphosate (>1 gal) Agricultural/Row crop
right-of-way targeted
tracking.
Class H Dicamba 3-year tracking, severe
buffer zones, strict
temperature cutoffs.
Class I Quinclorac Up to 4-mile aerial
buffers when
tank-mixed with EC
formulations.
Class J Warfarin Exclusively restricted to
feral hog toxicant
baiting.
PART II: THE ELITE TEST BANK
Tier 1: Foundational Syntax & Application
This tier evaluates fundamental knowledge regarding rigid operational thresholds, baseline
definitions, and the core legal architecture governing agricultural aviation in Arkansas.
Q1: A commercial aerial applicator is preparing to dispense an ASPB Class E restricted-use
,pesticide over an agricultural field in Arkansas. Based on the principles of the Arkansas
Regulations on Pesticide Use, which action is the FIRST legal prerequisite for the commercial
firm? A) Acquiring a Section 24(c) Special Local Needs Registration for the specific pesticide. B)
Maintaining financial responsibility via an insurance policy with a minimum $50,000 limit. C)
Securing a Firm's Custom Applicator Permit and designating a licensed Operator-in-Charge. D)
Providing 48-hour public notice to all adjacent landowners regarding the intended flight path.
● The Answer: C (Securing a Firm's Custom Applicator Permit and designating a licensed
Operator-in-Charge.)
● Distractor Analysis:
○ A is incorrect: Section 24(c) is utilized for state-specific pesticide label deviations or
local needs, not as a prerequisite for applying a standard registered Class E
product.
○ B is incorrect: The minimum financial responsibility for Custom Application Firms in
Arkansas is strictly set at $100,000, not $50,000, with a maximum deductible of
$5,000.
○ D is incorrect: Public notice is an FAA Part 137 requirement for operating
specifically over congested areas, not an ASPB requirement for standard Class E
field applications.
The Mentor's Analysis: Custom application of Class E and F pesticides carries severe
environmental and financial risk, triggering the ASPB's strictest firm-level licensing architecture.
When facing high-liability chemical distribution, the immediate priority for the organization is
establishing institutional accountability. By utilizing the Operator-in-Charge mandate, the firm
bypasses the common regulatory trap of assuming individual applicator licenses are sufficient
for commercial operations. Professional/Academic Intuition: Class E and F pesticides
immediately and unequivocally trigger the requirement for a Custom Applicator Permit
and a designated Operator-in-Charge.
Q2: Under Arkansas Rule No. 2 for Commercial Applicators, an aerial applicator is checking
morning temperatures to verify that an atmospheric inversion layer is unlikely to trap herbicide
spray. Which condition MUST be met before a pre-noon application can legally commence? A)
The ambient temperature must be a minimum of 5°F above the morning low. B) The ambient
temperature must be a minimum of 3°F above the morning low measured at the field. C) The
ambient temperature must not have decreased more than 3°F from the afternoon high. D) The
ambient temperature must have reached a baseline reading of 65°F.
● The Answer: B (The ambient temperature must be a minimum of 3°F above the morning
low measured at the field.)
● Distractor Analysis:
○ A is incorrect: The 5°F metric is utilized exclusively for afternoon applications (which
must not have decreased more than 5°F from the afternoon high), not for morning
solar heating.
○ C is incorrect: This blends the afternoon rule incorrectly and applies the wrong
numerical value to the cooling phase.
○ D is incorrect: There is no generic baseline temperature of 65°F in the statute;
inversion breakup relies on relative temperature differentials, not absolute
temperatures.
The Mentor's Analysis: Temperature inversions trap fine spray droplets in suspended, stable
air masses that move laterally off-target with light breezes. When facing early morning
applications, the immediate priority is confirming the inversion has "broken" via sufficient ground
heating. By utilizing the +3°F morning differential rule, the operator bypasses the common trap
, of flying solely based on visual clarity or calm wind speeds. Professional/Academic Intuition:
Pre-noon inversions are mathematically defeated when the temperature rises 3°F above
the morning low; post-noon inversions form when the temperature drops 5°F from the
daily high.
Q3: A Fixed-Wing agricultural aircraft has a wingspan of 50 feet. To comply with Arkansas aerial
application rules regarding spray drift reduction, what is the MAXIMUM allowable boom length?
A) 30 feet B) 35 feet C) 40 feet D) 45 feet
● The Answer: B (35 feet)
● Distractor Analysis:
○ A is incorrect: 30 feet is overly restrictive and represents an arbitrary number
without statutory basis.
○ C is incorrect: 40 feet represents 80% (0.8) of the wingspan, which is the maximum
ratio allowed exclusively for rotary-wing (helicopter) aircraft, not fixed-wing.
○ D is incorrect: 45 feet represents 90%, which violates the aerodynamic principle of
avoiding wingtip vortex entrainment and is illegal under ASPB rules.
The Mentor's Analysis: Wingtip vortices forcefully entrain fine spray droplets, carrying them
upward and outward, which induces severe off-target drift. When configuring boom geometry,
the immediate priority is keeping active nozzles inboard of the high-energy vortex generation
zones. By utilizing the 0.7 wingspan multiplier, the aviation maintenance technician bypasses
the common trap of maximizing boom width at the direct expense of drift control.
Professional/Academic Intuition: Fixed-wing boom length must never exceed 70% (0.7) of
the total wingspan; Rotary-wing boom length is capped at 80% (0.8).
Q4: A pilot is preparing to conduct an agricultural aircraft operation dispensing an economic
poison. According to FAA Part 137.3, which of the following aerial dispensing activities is
STRICTLY EXCLUDED from the definition of an agricultural aircraft operation? A) Dispensing
substances intended for forest preservation. B) Dispensing chemical plant nourishment or soil
treatments. C) Dispensing live insects. D) Dispensing a chemical defoliant over non-crop land.
● The Answer: C (Dispensing live insects.)
● Distractor Analysis:
○ A is incorrect: Dispensing activities directly affecting agriculture, horticulture, or
forest preservation are explicitly included in the definition.
○ B is incorrect: Dispensing plant nourishment (fertilizers) and soil treatments
represents a core statutory component of agricultural aircraft operations.
○ D is incorrect: Dispensing defoliants qualifies as an economic poison under the Part
137 mandate.
The Mentor's Analysis: FAA Part 137 is fundamentally built around the dispersion of
chemicals, particulate matter, and inanimate biological agents. When classifying biological
control methods, the immediate priority is distinguishing between chemical/seed dispersion and
live organism release. By utilizing the statutory exclusion of live insects, the operator bypasses
the common trap of assuming all aerial farm assistance falls under Part 137 jurisdiction.
Professional/Academic Intuition: FAA Part 137 covers economic poisons, defoliants, and
fertilizers, but explicitly forbids regulatory jurisdiction over the aerial release of live
insects.
Q5: Which of the following conditions constitutes the exact legal definition of "Drift" according to
Arkansas Pesticide Use regulations? A) The intended and calculated movement of pesticides
into a designated vegetative buffer zone. B) Off-target movement of a pesticide onto desirable
vegetation, waterways, or where human health may be adversely impacted. C) The secondary
volatilization of a pesticide into the atmosphere 48 hours post-application. D) The chemical
Applicator Exam
Mastery | Q&A | FAA 137
& ASPB Standards
PART 0: THE (Table of Contents)
Section Cognitive Tier Focus Area Question Range
PART I N/A The Preview & Critical N/A
Axioms
PART II Tier 1 Foundational Syntax & Q1 – Q15
Application
PART II Tier 2 Complex Application & Q16 – Q35
Simulation
PART II Tier 3 Grandmaster Synthesis Q36 – Q60
PART I: THE Preview
Mastering this document bridges the gap between the rote memorization of Federal Aviation
Administration (FAA) Part 137 regulations and the Arkansas State Plant Board (ASPB) statutory
standards, forging the reader into a top-tier agricultural aviation professional. Precision in legal
compliance, aerodynamic dispersion physics, and pesticide classification translates directly to
elite operational safety, chemical efficacy, and zero-liability commercial practice.
The "Critical Axioms" Cheat Sheet:
● ASPB Classification Hierarchy: Class E and F (Custom Applications like 2,4-D) strictly
require an Operator-in-Charge, a Firm's Custom Applicator Permit, $100,000 in financial
responsibility, and exhaustive 3-year recordkeeping.
● Dicamba 2026 Parameters: Applications are terminated statewide on June 30. Maximum
application limits are 0.5 lbs/acre per application (1.0 lb annually), with mandatory 40
oz/acre volatility reduction agents. Applications are unconditionally prohibited if
temperatures are forecasted at or above 95°F on the day of or the day after application.
● FAA 137.51 Congested Areas: Requires prior written local political approval, public
notice, and Flight Standards District Office (FSDO) plan approval. Single-engine aircraft
are explicitly forbidden from taking off loaded or executing turnarounds over a congested
area.
● Aerial Equipment Hard Decks: The maximum legal application airspeed is 145 mph.
Release height must not exceed 15 feet above the crop canopy. Boom length ratios are
capped at 0.7 of the wingspan for fixed-wing aircraft and 0.8 for rotary-wing aircraft.
, ● Inversion Verification: Morning applications require ambient temperatures at the field to
rise at least 3°F above the morning low. Afternoon applications require temperatures to
decrease no more than 5°F from the afternoon high to verify the absence of an inversion
layer.
ASPB Pesticide Classification Matrix
Classification Primary Chemical / Key Regulatory Source
Target Restraints
Class A General Registered Baseline equipment
Pesticides documentation on
ASPB forms.
Class C High-Risk General Requires annual ASPB
equipment physical
inspection.
Class D Buffer-Dependent Minimum 300-foot
buffer if wind blows
toward desirable
vegetation.
Class E Restricted Use Requires Custom
(Custom) Permit, OIC, $100k
insurance, 2-year
tracking.
Class F 2,4-D & Phenoxys 3-year record retention,
strict county dates,
Hardship Permits.
Class G Glyphosate (>1 gal) Agricultural/Row crop
right-of-way targeted
tracking.
Class H Dicamba 3-year tracking, severe
buffer zones, strict
temperature cutoffs.
Class I Quinclorac Up to 4-mile aerial
buffers when
tank-mixed with EC
formulations.
Class J Warfarin Exclusively restricted to
feral hog toxicant
baiting.
PART II: THE ELITE TEST BANK
Tier 1: Foundational Syntax & Application
This tier evaluates fundamental knowledge regarding rigid operational thresholds, baseline
definitions, and the core legal architecture governing agricultural aviation in Arkansas.
Q1: A commercial aerial applicator is preparing to dispense an ASPB Class E restricted-use
,pesticide over an agricultural field in Arkansas. Based on the principles of the Arkansas
Regulations on Pesticide Use, which action is the FIRST legal prerequisite for the commercial
firm? A) Acquiring a Section 24(c) Special Local Needs Registration for the specific pesticide. B)
Maintaining financial responsibility via an insurance policy with a minimum $50,000 limit. C)
Securing a Firm's Custom Applicator Permit and designating a licensed Operator-in-Charge. D)
Providing 48-hour public notice to all adjacent landowners regarding the intended flight path.
● The Answer: C (Securing a Firm's Custom Applicator Permit and designating a licensed
Operator-in-Charge.)
● Distractor Analysis:
○ A is incorrect: Section 24(c) is utilized for state-specific pesticide label deviations or
local needs, not as a prerequisite for applying a standard registered Class E
product.
○ B is incorrect: The minimum financial responsibility for Custom Application Firms in
Arkansas is strictly set at $100,000, not $50,000, with a maximum deductible of
$5,000.
○ D is incorrect: Public notice is an FAA Part 137 requirement for operating
specifically over congested areas, not an ASPB requirement for standard Class E
field applications.
The Mentor's Analysis: Custom application of Class E and F pesticides carries severe
environmental and financial risk, triggering the ASPB's strictest firm-level licensing architecture.
When facing high-liability chemical distribution, the immediate priority for the organization is
establishing institutional accountability. By utilizing the Operator-in-Charge mandate, the firm
bypasses the common regulatory trap of assuming individual applicator licenses are sufficient
for commercial operations. Professional/Academic Intuition: Class E and F pesticides
immediately and unequivocally trigger the requirement for a Custom Applicator Permit
and a designated Operator-in-Charge.
Q2: Under Arkansas Rule No. 2 for Commercial Applicators, an aerial applicator is checking
morning temperatures to verify that an atmospheric inversion layer is unlikely to trap herbicide
spray. Which condition MUST be met before a pre-noon application can legally commence? A)
The ambient temperature must be a minimum of 5°F above the morning low. B) The ambient
temperature must be a minimum of 3°F above the morning low measured at the field. C) The
ambient temperature must not have decreased more than 3°F from the afternoon high. D) The
ambient temperature must have reached a baseline reading of 65°F.
● The Answer: B (The ambient temperature must be a minimum of 3°F above the morning
low measured at the field.)
● Distractor Analysis:
○ A is incorrect: The 5°F metric is utilized exclusively for afternoon applications (which
must not have decreased more than 5°F from the afternoon high), not for morning
solar heating.
○ C is incorrect: This blends the afternoon rule incorrectly and applies the wrong
numerical value to the cooling phase.
○ D is incorrect: There is no generic baseline temperature of 65°F in the statute;
inversion breakup relies on relative temperature differentials, not absolute
temperatures.
The Mentor's Analysis: Temperature inversions trap fine spray droplets in suspended, stable
air masses that move laterally off-target with light breezes. When facing early morning
applications, the immediate priority is confirming the inversion has "broken" via sufficient ground
heating. By utilizing the +3°F morning differential rule, the operator bypasses the common trap
, of flying solely based on visual clarity or calm wind speeds. Professional/Academic Intuition:
Pre-noon inversions are mathematically defeated when the temperature rises 3°F above
the morning low; post-noon inversions form when the temperature drops 5°F from the
daily high.
Q3: A Fixed-Wing agricultural aircraft has a wingspan of 50 feet. To comply with Arkansas aerial
application rules regarding spray drift reduction, what is the MAXIMUM allowable boom length?
A) 30 feet B) 35 feet C) 40 feet D) 45 feet
● The Answer: B (35 feet)
● Distractor Analysis:
○ A is incorrect: 30 feet is overly restrictive and represents an arbitrary number
without statutory basis.
○ C is incorrect: 40 feet represents 80% (0.8) of the wingspan, which is the maximum
ratio allowed exclusively for rotary-wing (helicopter) aircraft, not fixed-wing.
○ D is incorrect: 45 feet represents 90%, which violates the aerodynamic principle of
avoiding wingtip vortex entrainment and is illegal under ASPB rules.
The Mentor's Analysis: Wingtip vortices forcefully entrain fine spray droplets, carrying them
upward and outward, which induces severe off-target drift. When configuring boom geometry,
the immediate priority is keeping active nozzles inboard of the high-energy vortex generation
zones. By utilizing the 0.7 wingspan multiplier, the aviation maintenance technician bypasses
the common trap of maximizing boom width at the direct expense of drift control.
Professional/Academic Intuition: Fixed-wing boom length must never exceed 70% (0.7) of
the total wingspan; Rotary-wing boom length is capped at 80% (0.8).
Q4: A pilot is preparing to conduct an agricultural aircraft operation dispensing an economic
poison. According to FAA Part 137.3, which of the following aerial dispensing activities is
STRICTLY EXCLUDED from the definition of an agricultural aircraft operation? A) Dispensing
substances intended for forest preservation. B) Dispensing chemical plant nourishment or soil
treatments. C) Dispensing live insects. D) Dispensing a chemical defoliant over non-crop land.
● The Answer: C (Dispensing live insects.)
● Distractor Analysis:
○ A is incorrect: Dispensing activities directly affecting agriculture, horticulture, or
forest preservation are explicitly included in the definition.
○ B is incorrect: Dispensing plant nourishment (fertilizers) and soil treatments
represents a core statutory component of agricultural aircraft operations.
○ D is incorrect: Dispensing defoliants qualifies as an economic poison under the Part
137 mandate.
The Mentor's Analysis: FAA Part 137 is fundamentally built around the dispersion of
chemicals, particulate matter, and inanimate biological agents. When classifying biological
control methods, the immediate priority is distinguishing between chemical/seed dispersion and
live organism release. By utilizing the statutory exclusion of live insects, the operator bypasses
the common trap of assuming all aerial farm assistance falls under Part 137 jurisdiction.
Professional/Academic Intuition: FAA Part 137 covers economic poisons, defoliants, and
fertilizers, but explicitly forbids regulatory jurisdiction over the aerial release of live
insects.
Q5: Which of the following conditions constitutes the exact legal definition of "Drift" according to
Arkansas Pesticide Use regulations? A) The intended and calculated movement of pesticides
into a designated vegetative buffer zone. B) Off-target movement of a pesticide onto desirable
vegetation, waterways, or where human health may be adversely impacted. C) The secondary
volatilization of a pesticide into the atmosphere 48 hours post-application. D) The chemical
