A-91-042
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: IMMEDIATELY CONDUCT A DIRECTED SAFETY INVESTIGATION, IN CONJUCTION WITH PRATT & WHITNEY, TO DETERMINE THE MAGNITUDE AND CAUSE OF THE CORROSION (PITTING) ON THE HIGH-PRESSURE COMPRESSOR ROTATING DISKS OF JT8D MODEL ENGINES, TO IDENTIFY THOSE ENGINES THAT ARE BEING OPERATED IN A MANNER THAT MAKES THEM SUSCEPTIBLE TO CORROSION, AND TO DEVELOP CORRECTIVE ACTION THAT WILL ENSURE THE CONTINUED SAFE OPERATION OF THE THOSE ENGINES. (URGENT)
In plain language (FlightFinder summary)
The Federal Aviation Administration is asked to immediately launch a directed safety investigation with Pratt & Whitney to determine the extent and cause of corrosion (pitting) on high-pressure compressor rotating disks in JT8D engines. The FAA must also identify engines operated in ways that make them vulnerable to this corrosion and develop corrective actions to ensure their continued safe operation.
This plain-language summary is written by FlightFinder to explain the recommendation above. It is not the official wording — the verbatim NTSB text is quoted above.
Details
| Status | Closed - Acceptable Action |
|---|---|
| Mode | Aviation |
| Closed | Sep 22, 1992 |
| NTSB number | NYC91FA125 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).