Type training · Boeing 737NG B1.1 · ATA 30
Boeing 737NG B1.1: Ice and Rain Protection (ATA 30)Type training questions & answers
Inlet cowl anti-ice, probe and AOA heat, flight deck window heat with WHCU BITE, and windshield wipers.
- A worked explanation on every question
- Written for the 737-600/700/800/900
- Read in English or 15 other languages
Sample Ice and Rain Protection questions with answers
Three questions from the free preview. Think of your answer first, then open the explanation.
1.What three jobs does 737NG flight deck window heat do?
- A.Dim the sunlight and stop glare on the glass
- B.Stop ice and fog, add impact strength
- C.Stop ice only, with no other purpose
Show answer and explanation
Correct answer: B. Stop ice and fog, add impact strength
Window heat prevents ice and fog and improves window impact strength. Ref Boeing 737-600/700/800/900 training manual, ATA 30.
2.What limits 737NG inlet cowl anti-ice duct pressure?
- A.TAI valve regulator to 50 psi
- B.A fixed orifice in the duct, to 18 psi
- C.The engine PRSOV, to about 42 psi
Show answer and explanation
Correct answer: A. TAI valve regulator to 50 psi
The regulator modulates the butterfly to limit downstream pressure to 50 psi maximum. Ref Boeing 737NG training manual, ATA 30.
3.Can a failed 737NG cowl TAI valve be locked?
- A.Only in the open position
- B.Yes, open or closed
- C.No, it must be replaced
Show answer and explanation
Correct answer: B. Yes, open or closed
The valve can be manually locked fully open or fully closed if it fails. Ref Boeing 737NG training manual, ATA 30.
Part of the Boeing 737NG B1.1 airframe and systems course
One chapter of the Boeing 737NG B1.1 airframe and systems course question bank, for the 737-600/700/800/900, 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.
All Boeing 737NG B1.1 chapters →