A-08-025
NTSB Safety Recommendation — Aviation
Recommendation text
TO THE FEDERAL AVIATION ADMINISTRATION: Revise Advisory Circular (AC)-27, Certification of Normal Category Rotorcraft, and AC-29, Certification of Transport Category Rotorcraft, to include long-term durability testing of adhesive bond joints for helicopter blades to ensure safe operation throughout their design life in all environments and operating load spectrums that the blades will experience and to set service life limits accordingly.
In plain language (FlightFinder summary)
The Federal Aviation Administration is asked to revise Advisory Circulars AC-27 and AC-29 to require long-term durability testing of adhesive bond joints in helicopter blades, ensuring safe operation throughout their design life under all environments and load spectrums, and to set service life limits accordingly.
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 | Nov 20, 2012 |
| NTSB number | DFW07WA002 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).