Unclassified

Boeing certified three engine options for the 747-400

Last observed 2026-11-03 · Confidence 99%

Canonical event record

What happened

The 747-400 was certified with Pratt & Whitney PW4056, GE CF6-80C2B1F and Rolls-Royce RB211-524G/H engines.

Why it matters: Aviation Synth is still preparing the editorial interpretation for this source-backed event.

Connected intelligence

No reviewed trend connection is available for this event.

These events share topic context. This is not a claim of causation.