Another crew sees only smoke.
The pilot may know he can still move the airplane with trim.
Another aircraft sees the bomber drop thousands of feet.
The engineer may know a fire has gone out.
A man several hundred yards away sees a flame streaming behind the wing and assumes an explosion will come next.
History becomes clearer when those perspectives are placed beside one another.
Anderson tells us what the tail looked like.
Mellis tells us what another bomber saw.
The formation chart tells us where Douglas's aircraft was supposed to be.
The aircraft-loss list tells us where it finally stopped.
The veterans' later account tells us what happened when the RAF tried to move the wreck.
No single source contains everything.
Together, they form the flight.
The story is also about the limits of the phrase “two engines out”
People often summarize damaged-bomber flights with engine counts.
A B-17 returned on three engines.
Another returned on two engines.
A famous bomber landed with part of its tail missing.
The numbers are dramatic because they are easy to understand.
Four engines are normal.
Two engines mean half are gone.
However, engine count alone can hide more than it explains.
The position of the failed engines matters.
The condition of the remaining engines matters.
Altitude matters.
Weight matters.
Fuel matters.
Weather matters.
Structural damage matters.
Control damage matters.
The distance to friendly territory matters.
A B-17 with two perfectly functioning engines, intact flight controls, little remaining bomb load, and plenty of altitude may be in a far better position than a B-17 with three engines running but severe control damage or fire.
43-37892 combined several of the worst problems.
Its engines were only one part of the emergency.
Douglas could not simply apply a standard two-engine procedure and fly home normally.
He was managing power while avoiding a transition to manual controls that he feared could make the aircraft uncontrollable.
That is why Anderson's memory of the hanging cables is so important.
It changes the entire meaning of the return.
The surviving engines were keeping the B-17 in the air.
The automatic pilot and trim were helping determine where that airframe went.
The crew was trying to preserve both systems long enough for England to appear.
The airplane had become a balance of partial functions.
Nothing needed to work perfectly.
Enough things needed to keep working at the same time.
The automatic pilot became an unlikely lifeline
Automatic pilots are often misunderstood in stories about wartime aviation.
They are sometimes described as if the pilot could simply switch them on and allow the machine to fly itself home.
That is not what happened.
Douglas remained responsible for the aircraft throughout the return.
The automatic system could help hold an attitude or course, but it could not evaluate engine damage, choose the safest landing field, manage a fire, decide what equipment to jettison, or understand whether the bomber had enough altitude to cross the Channel.
It also depended on electrical and mechanical components that could themselves fail.
Douglas had to keep adjusting the airplane around that system.
Anderson's statement that Douglas flew home “on a trim with two engines” captures the improvised nature of the process.
The automatic pilot did not replace the pilot.
It became one surviving path between the pilot's decisions and the damaged aircraft.
This is similar to the way crews used many wartime systems in emergencies.
Equipment designed for one purpose acquired another.
A gun could become disposable ballast.
A ball turret designed for defense could be removed to increase the chance of staying airborne.
An automatic pilot designed to hold a bombing run could become a substitute for damaged manual control connections.
A fighter strip designed for smaller aircraft could become a landing place for a heavy bomber.
Wartime survival often depended on understanding what equipment could still do rather than what it had originally been designed to do.
Douglas appears to have understood that distinction very well.
He did not try to restore the B-17 to normal.
He accepted that normal flight was gone.
From that point forward, every decision was based on the airplane he actually had rather than the airplane he wished he still had.
That is one of the most important skills in any emergency.
Why the crew did not jump over France
The decision to remain aboard deserves more attention because hindsight can make it look obvious.
It was not.
The crew had already experienced a large engine fire.
Two engines were lost.
The aircraft had descended about 10,000 feet.
Control cables were damaged.
The airplane was still over territory where enemy forces remained active.
A pilot who ordered a bailout under those conditions would not automatically have been acting irrationally.
The aircraft had several reasons to fail completely.