A-82-053
NTSB Safety Recommendation — Aviation
Recommendation text
IN VIEW OF THE POTENTIALLY CATASTROPHIC RESULTS OF A PROPELLER BLADE FAILURE, THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: ISSUE AN AIRWORTHINESS DIRECTIVE REQUIRING APPROPRIATE REPETITIVE TESTS OR INSPECTIONS OF DEICING BOOTS ON THE RATIER-FIGEAC MODEL FH 146 PROPELLERS AT INTERVALS WHICH WILL PRECLUDE FAILURE OF BLADES BY FATIGUE CRACKING ARISING FROM LOCALIZED OVERHEATING OF THE BOOT MATERIAL. (URGENT)
In plain language (FlightFinder summary)
The NTSB asks the Federal Aviation Administration to issue an airworthiness directive that mandates regular tests or inspections of deicing boots on Ratier-Figeac Model FH 146 propellers. The intervals should prevent blade failure from fatigue cracking caused by localized overheating of the boot material, because a propeller blade failure could have catastrophic consequences.
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 | Apr 6, 1983 |
| NTSB number | NYC82IA051 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).