A-99-012
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FAA: REQUIRE THAT ALL PRATT & WHITNEY JT8D-1 THROUGH -17AR ENGINES BE DISASSEMBLED AT THE NEXT SHOP VISIT AND THAT THE LOW PRESSURE COMPRESSOR REAR TIERODS BE REMOVED, CLEANED, STRIPPED OF ANY ANTIGALLANT AND NICKEL CADMIUM (NICAD), NON-DESTRUCTIVELY INSPECTED, REPLATED WITH NICAD, COATED WITH THE ANTIGALLANT, AND REINSTALLED OR THAT NEW TIERODS COATED WITH THE ANTIGALLANT BE INSTALLED.
In plain language (FlightFinder summary)
The FAA is asked to require that all Pratt & Whitney JT8D-1 through -17AR engines be disassembled at their next shop visit. During this process, the low pressure compressor rear tierods must be removed, cleaned, stripped of any antigallant and nickel cadmium, inspected non-destructively, replated with nickel cadmium, coated with antigallant, and reinstalled; alternatively, new tierods coated with antigallant can be 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 Alternate Action |
|---|---|
| Mode | Aviation |
| Closed | May 6, 2003 |
| NTSB number | MIA98FA112 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).