A-06-026
NTSB Safety Recommendation — Aviation
Recommendation text
TO THE FEDERAL AVIATION ADMINISTRATION: During the non-destructive inspections of tension-torsion (T-T) straps installed in anti-torque fans in MD Helicopters, Inc., model MD900 helicopters and any other models requiring x-ray inspections, require that the x-ray film be examined for indications of both progressive fiber fractures and for longitudinal cracks in the T-T straps, and require that any T-T straps in which progressive fiber fractures or longitudinal cracks are found be removed from service.
In plain language (FlightFinder summary)
The Federal Aviation Administration is asked to mandate that, during non-destructive inspections of tension-torsion (T-T) straps in MD Helicopters MD900 and other models requiring x-ray inspections, the x-ray film be checked for both progressive fiber fractures and longitudinal cracks, and that any straps with these findings be removed from 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 - Unacceptable Action |
|---|---|
| Mode | Aviation |
| Closed | Jul 12, 2011 |
| NTSB number | LAX04LA333 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).