A-82-068
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: ISSUE AN AIRWORTHINESS DIRECTIVE TO REQUIRE AN IMMEDIATE ONE-TIME INSPECTION BY AN FAA-APPROVED METHOD OF ALL MCCAULEY MODEL NUMBER 90-DHB TYPE PROPELLER BLADES AND TO REMOVE FROM SERVICE ANY BLADES FOUND TO BE CRACKED, WITH EMPHASIS ON EARLY COMPLETION OF INSPECTIONS OF BLADES IN THE SAME FORGING LOT AS BLADE S/N B122098 WHICH EXPERIENCED FATIQUE FAILURE IN SERVICE. (URGENT)
In plain language (FlightFinder summary)
The NTSB asks the FAA to issue an airworthiness directive requiring a one-time inspection of all McCauley model 90-DHB propeller blades using an FAA-approved method, and to remove any cracked blades from service. The directive should prioritize early inspection of blades from the same forging lot as blade serial number B122098, which experienced a fatigue failure in service.
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 | Apr 7, 1983 |
| NTSB number | CHI82FA123 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).