EASA PART 66 : DIGITAL QUESTION4 | TOP SCORES MADE SIMPLE | TRUSTED TEST SOLUTIONS

EASA PART 66 : DIGITAL QUESTION4 | TOP SCORES
MADE SIMPLE | TRUSTED TEST SOLUTIONS!

Question Number. 1. In arinc 629, LRUs are programmed to transmit.

Option A. one at a time.

Option B. one transmits and one recieves.

Option C. all at the same time. Answer: Correct Answer is. one transmits and one
recieves.

Explanation. NIL.

Question Number. 2. In aircraft use, fibre optic cables should comply with.

Option A. ARINC 629 standard.

Option B. ARIND 429 standard.

Option C. ARIND 636 standard. Answer: Correct Answer is. ARIND 636 standard.

Explanation. NIL.

Question Number. 3. ARINC 629 databus is.

Option A. one cable, bi-directional.

Option B. two cables, uni-directional.

Option C. two cables, bi directional. Answer: Correct Answer is. two cables, bi
directional.

Explanation. NIL.

Question Number. 4. An ARINC 573 data bus is used.



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,Option A. to input into a Digital Flight Data Recorder.

Option B. to supply digital inputs from a Symbol Generator to the EADI and EHSI.

Option C. to input into a FDR Digital Acquisition Unit. Answer: Correct Answer is. to
input into a Digital Flight Data Recorder.

Explanation. The FDR can have different inputs depending upon the age of the
system, modern systems use ARINC 573. The inputs to FDR DAU are only
analogue, discreet and ARINC 429. The interface between SGUs, EADI and EHSI is
only ARINC 429.

Question Number. 5. An ARINC 429 bus uses.

Option A. a twisted shielded pair of wires.

Option B. two bi-directional twin sheathed and earthed wires.

Option C. a single twin wire cable for each transmitter. Answer: Correct Answer is. a
twisted shielded pair of wires.

Explanation. Pallett - Aircraft Instruments Page 157.

Question Number. 6. The ARINC 429 data bus word systems use.

Option A. binary coded decimal.

Option B. decimal numbering.

Option C. hexadecimal numbering. Answer: Correct Answer is. binary coded
decimal.

Explanation. Pallett - Aircraft Instruments Page 156.

Question Number. 7. ARINC 573 is related to what system?.

Option A. Weather Radar.

Option B. FDR.

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, Option C. INS. Answer: Correct Answer is. FDR.

Explanation. Boeing Maintenance Training notes for B757.

Question Number. 8. ARINC 629 current mode couplers are.

Option A. capacitive.

Option B. resistive.

Option C. inductive. Answer: Correct Answer is. inductive.

Explanation. NIL.

Question Number. 9. ARINC 629 databus is.

Option A. one bus, bi-directional data flow.

Option B. two buses, unidirectional.

Option C. two buses, bi-directional data flow. Answer: Correct Answer is. one bus,
bi-directional data flow.

Explanation. NIL.

Question Number. 10. Normal transmission order of ARINC 629 LRUs in periodic
mode is in order of.

Option A. shortest to largest TI.

Option B. shortest to largest TG.

Option C. power up. Answer: Correct Answer is. power up.

Explanation. B777 MM 23-91-00 pg 41. Shortest to longest terminal gap is for
aperiodic mode only.

Question Number. 11. In an ARINC 429 wordstring, bits 1 to 8 represent the.

Option A. destination LRU address.

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