A-92-114
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: ISSUED A NEW AD OR REVISE AD T92-21-51 TO: (1.) REDUCE THE RECURRENT INSPECTION INTERVAL FOR THE OLD STYLE FUSE PINS FROM 500 CYCLES TO 100 CYCLES OR LESS AND SPECIFY A TIME OR CYCLE LIMIT FOR REMOVAL OF THE OLD STYLE FUSE PINS FROM SERVICE. (2.) REDUCE THE INSPECTION INTERVALS FOR THE NEW STYLE PINS IF THE NEED FOR A REDUCTION IS INDICATED BY THE INSPECTION RESULTS THAT ARE BEING REPORTED PER THE CURRENT AD REQUIREMENT. (3.) REQUIRE AN ULTRASONIC INSPECTION, IN LIEU OF THE CURRENT VISUAL INSPECTION, OF THE WING SPAR LUG AND PYLON CLEVIS OF THE MIDSPAR ATTACHMENTS. (4.) ESTABLISH AN INSPECTION REQUIREMENT FOR THE UPPER LINK AND DIAGONAL BRACE ATTACHMENT HARDWARE. (5.) APPLY THE INSPECTION PROGRAM FOR THE NEW STYLE PINS AND THE PYLON ATTACHMENT FITTINGS TO GE-POWERED AIRPLANES. (URGENT)
In plain language (FlightFinder summary)
The FAA is asked to issue a new or revised Airworthiness Directive that: shortens the inspection interval for old-style fuse pins from 500 to 100 cycles or fewer and sets a removal limit; reduces inspection intervals for new-style pins if reported results warrant it; replaces visual with ultrasonic inspection of the wing spar lug and pylon clevis at midspar attachments; adds an inspection requirement for upper link and diagonal brace attachment hardware; and extends the new-style pin and pylon attachment fitting inspection program to GE-powered airplanes. The recommendation is marked urgent.
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 | Jul 17, 1995 |
| NTSB number | DCA93RA001 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).