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Unanswered Questions

651 questions with no upvoted or accepted answers
11
votes
1answer
629 views

Is it a standard procedure to use emergency slides without imminent danger?

On 11 Jun 2017 Easyjet U23246 from Ljubljana to London Stansted diverted to Cologne-Bonn over a "suspicious conversation". All passengers were evacuated using the emergency slides, see BBC Video. ...
11
votes
2answers
394 views

How do airlines handle SIGMETS?

In general, what is the action taken by airlines when presented with a SIGMET in the projected route. Will they go around it, cancel the flight prior to takeoff, or simply fly thought it anyway? As ...
9
votes
0answers
286 views

Denver International Airport pneumatic tube systems

Wikipedia says: Denver International Airport uses many pneumatic tube systems, including a 25 cm diameter system for moving aircraft parts to remote concourses, a 10 cm system for United Airlines ...
8
votes
0answers
132 views

Why is the weather radar mounted on the left wing of the TBM?

Weather radar is mounted starboard on the Pilatus PC12 or in the Piper Meridian/M600/M500. It adds drag to the right wing, thus a right yawing moment, and helps to counteract the slipstream effect ...
8
votes
0answers
249 views

When were the last subsonic turbojet-powered airliners retired from commercial passenger service?

The very first jetliners (Comet, Tu-104, Caravelle I-VI, 707-120/-220/-320, DC-8 series 10-30, original 720, CV-880) all used turbojet engines, turbofans not being available until later; when ...
8
votes
2answers
528 views

To what extent have political (race, gender, social class) attitudes been implicated as human factors in the cockpit?

This question is related to: How does cultural difference impinge upon human factors in aviation industry safety? How have deep-seated cultural human factors (particularly in east Asia) in the ...
7
votes
3answers
189 views

How is one's hypoxia resistance affected by the time of day?

I am doing my PPL course in the Czech Republic and here they have the following question in tests: when during a day is the resistance of a human organism to hypoxia the best? There are 3 possible ...
7
votes
1answer
147 views

Why does obstacle clearance area splay outward instead of being a rectangle?

I am having trouble figuring out the logic behind the way that obstacle clearance areas are constructed. Take, for example, a departure procedure where Initial Climb Area is defined in TERPS (section ...
7
votes
1answer
500 views

When is this Class D airspace not Class D airspace?

The Terminal Area Chart (TAC) shows the Class D airspace for Los Angeles International Airport (KLAX) view the full TAC. I have highlighted in green the north and south portions of the Class D ...
7
votes
1answer
373 views

What is the time information on the G1000 MFD map during a hold?

I just completed an ILS approach and went missed. I followed the published missed approach and entered the hold. When I entered the hold, on the MFD map a timer-like display was on top of the "...
6
votes
0answers
93 views
+250

Can pilots tell if a cloud or fog is made out of water droplets or ice crystals when flying through it?

I understand that clouds can be made out of water droplets or ice crystals. And that fog is nothing else than low-lying clouds. However, I've experienced fog in a wide ranges of temperatures. I like ...
6
votes
1answer
161 views

Why must a pilot enter “Upwind” when entering the traffic pattern for RWY 9 at Linden (LDJ) airport in New Jersey?

The chart supplement procedures require aircraft to enter the traffic pattern "Upwind" for Runway 9 at Linden (LDJ) airport in New Jersey. Question: Why is this required? Chart Supplement: New York ...
6
votes
2answers
368 views

Would a coaxial propeller with the second prop slower and larger improve speed?

Looking at various propeller designs, I started wondering about these limitations: Large propellers at high speeds have tips going supersonic Scimitar props attempt to keep prop tip from going ...
6
votes
0answers
288 views

Can the RAM AIR valve cause depressurization on the CRJ-900?

On the CRJ-900 AIR-CONDITIONING panel there is a RAM AIR switch light which opens a valve and allows air from the ram air scoop to enter the mixing manifold for distribution to both the flight deck ...
6
votes
0answers
2k views

How can this ACARS message be decoded?

With regards to the text below, can someone offer either advice or a link to a website/document that would help decode ACARS messages. I am ok with the following: QU - ACARS "to" address Q - ACARS ...

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