A-97-002
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FAA: ISSUE AN AIRWORTHINESS DIRECTIVE THAT REDUCES THE INITIAL & RECURRING INSPECTION INTERVALS FOR OVERHAULED NICKEL-CADMIUM PLATED HIGH PRESSURE COMPRESSOR DISKS OF PRATT & WHITNEY (P&S) JT8D-1 THROUGH -17 ENGINES THAT ARE CATEGORIZED "LOW UTILIZATION" BY THE CALCULATIONS OF P&W ALERT SERVICE BULLETIN 6038 REVISION 5, DATED 8/17/94. THE INSPECTION INTERVAL SHOULD BE REDUCED TO SIGNIFICANTLY LESS THAN 8 CALENDAR YEARS & SHOULD BE CONSISTENT WITH FURTHER CORROSION RATE STUDIES BY P&W.
In plain language (FlightFinder summary)
The FAA must issue an airworthiness directive that shortens both the initial and recurring inspection intervals for overhauled nickel-cadmium plated high pressure compressor disks in Pratt & Whitney JT8D-1 through -17 engines categorized as 'low utilization' per P&W Alert Service Bulletin 6038 Revision 5 (8/17/94). The new interval should be significantly less than 8 calendar years and consistent with further corrosion rate studies by P&W.
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 | Oct 6, 1998 |
| NTSB number | DCA96RA021 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).