Unanswered Questions

975 questions with no upvoted or accepted answers
10
votes
0answers
362 views

Did the Phantom F-4 contain "polychron" or other synthetic materials as a replacement for rubber circa 1969?

update: In order to make it easier to answer this question, use of "synthetic materials as a replacement for rubber circa 1969" in any aircraft might be good enough. Michael Crichton's 1969 ...
9
votes
0answers
257 views

Who is this flyer seen in Oakland c. 1929?

Looking for identification of the man on the left. Second from left is W.A. "Sandy" Sanders, third is Denny Wright, and fourth is Clyde Sunderland. Oakland, around 1929.
9
votes
1answer
302 views

How are "charter" and "passenger" flights defined in the AIDX standard?

I'd like to know the difference between these flight types in the IATA AIDX standard; specifically, for use in fuel order notifications.
8
votes
0answers
359 views

Why does the flare mode of the A321neo engage 50 feet higher than the A321ceo?

Following is taken from the operating manual of A321neo: When passing 100 ft RA, the THS is frozen and the normal flight mode changes to flare mode as the aircraft descends to land. The flare mode is ...
8
votes
0answers
278 views

What equations and constants did they use to build the E6B flight computer?

E6B Flight computer: During my practice test, I tried to use the wikipedia provided equations to calculate Density Altitude and ended up with different results than the E6B. In this case, it looks ...
8
votes
0answers
597 views

How can I convert a frozen ATPL from South Africa to an Iranian one?

I have got a frozen ATPL license from South Africa and I'm from Iran. I came back home last year and I have converted my CPL/IR license to the Iranian piloting license by doing Air Law and Human ...
8
votes
0answers
411 views

Which US airport has the lowest circling MDH?

As I recently contemplated 14 CFR 135.223 and its implications, I began wondering about airports with exceptionally low circling minima. For a little context and background, the part of §135.223 that ...
7
votes
0answers
199 views

Engine Bearings Damage in Radial Engines

Studying the P47's dive performance in DCS, I noticed how it's easy to damage the engine bearings if you windmill the prop at high speed. Doing some research, I discovered that all radial engines are ...
7
votes
0answers
110 views

How to interpret flight schedule data from before 1987

I'm trying to interpret schedule data from before 1987 (see example). Example line: ...
7
votes
0answers
149 views

Boeing 737-800 Source Off Light and Flight Director Bias Out Of View Function

I have seen the following occur during simulator events. With a left Source Off light illuminated and the captain's autopilot and autothrottles engaged (or re-engaged): Captain's flight director ...
7
votes
0answers
221 views

Are airport emergency vehicles' sirens louder than normal?

So there I was this afternoon, sitting in my car waiting on my wife's flight to get in to Dulles Airport (IAD), in the cell phone parking lot. I was listening to some music on the radio when the ...
7
votes
1answer
4k views

What makes someone a 'Senior First Officer'?

Some airlines have a Senior First Officer rank. Apart from the title and (presumably) the pay, what makes them different from a regular First Officer? Do they have any differing duties or ...
6
votes
0answers
119 views

Why was the minimum turbulence intensity that commercial airliners have to withstand increased?

From 50 fps turbulence intensity at VC to 90-100 fps turbulence intensity at VC. The amended FAR design criteria was introduced in 1980 or 1981 for commercial airliners. What prompted this change?
6
votes
0answers
248 views

How did Soapy get to fly Hornets?

Allegedly, in early June 1983, while flying a Sea Harrier during a NATO exercise off the coast of Portugal, Royal Navy's Sub-Lieutenant Ian "Soapy" Watson found himself in a rather ...
6
votes
0answers
137 views

Why do GPS Copter Approaches require a slower final approach speed than conventional Copter Approaches?

AIM 10-1-2 says helicopter instrument approaches are designed with a maximum speed of 90 KIAS. However, it specifically exempts the final segment on GPS helicopter approaches, saying the maximum speed ...

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