Type training · Boeing 757 B1.1 · ATA 31
Boeing 757 B1.1: EICAS and Warning (ATA 31)Type training questions & answers
EICAS displays and alert levels, status and maintenance pages, ARINC 429 and the warning electronics unit.
- A worked explanation on every question
- Written for the 757-200 with Rolls-Royce RB211-535E4 engines
- Read in English or 15 other languages
Sample EICAS and Warning questions with answers
Three questions from the free preview. Think of your answer first, then open the explanation.
1.How many bits does an ARINC 429 data word contain?
- A.32 bits
- B.64 bits
- C.16 bits
Show answer and explanation
Correct answer: A. 32 bits
Each ARINC 429 word is 32 bits long, with a gap of at least four bit-times of null between words.
2.Where is the label in an ARINC 429 word, and how is it coded?
- A.Bits 29–31, in binary
- B.Bits 11–28, in BCD
- C.Bits 1–8, in octal
Show answer and explanation
Correct answer: C. Bits 1–8, in octal
The first eight bits carry the octal label, from 000 to 377. Receivers read the label to decide whether they need the word.
3.What do ARINC 429 labels 206 and 230 represent?
- A.Computed and true airspeed
- B.Altitude and vertical speed
- C.Heading and track angle
Show answer and explanation
Correct answer: A. Computed and true airspeed
Label 206 is computed airspeed and label 230 is true airspeed. Each label has a defined range and units in the ARINC 429 specification.
Part of the Boeing 757 B1.1 type course
One chapter of the Boeing 757 B1.1 type course question bank, for the 757-200 with Rolls-Royce RB211-535E4 engines, written in our own words for revision. Your type course and the aircraft maintenance manual stay the authority: limits and procedures can differ between airframes and operators.
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