A-99-053
NTSB Safety Recommendation — Aviation
Recommendation text
NTSB RECOMMENDS THAT THE FAA: REQUIRE, AS AN INTERIM ACTION FOR THOSE PRATT & WHITNEY JT8D-200 ENGINE COMBUSTION CHAMBER OUTER CASES (CCOC) THAT DID NOT HAVE THE BOSS WELDS REWORKED DURING MANUFACTURE, REPETITIVE ON-WING INSPECTIONS OF THE BOSSES AT APPROPRIATE INTERVALS FOR CRACKS IN THE WELDS AND, IF CRACKS ARE FOUND, REQUIRE THE REMOVAL OF THOSE ENGINES FROM SERVICE FOR REPLACEMENT OF THE CCOC. PERIODIC INSPECTIONS SHOULD CONTINUE UNTIL A ONE-PIECE, INTEGRAL BOSS CCOC IS INSTALLED.
In plain language (FlightFinder summary)
The FAA must require repetitive on-wing inspections of the boss welds on Pratt & Whitney JT8D-200 engine combustion chamber outer cases that were not reworked during manufacture. If cracks are found, those engines must be removed from service and the CCOC replaced. These inspections should continue until a one-piece, integral boss CCOC is installed.
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 | Jun 27, 2000 |
| NTSB number | NYC99SA010 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).