A-02-048
NTSB Safety Recommendation — Aviation
Recommendation text
TO THE FEDERAL AVIATION ADMINISTRATION: Require that maintenance facilities that overhaul Douglas DC-9, McDonnell Douglas MD-80/90, and Boeing 717 series airplanes’ jackscrew assemblies obtain specific authorization to perform such overhauls, predicated on demonstrating that they possess the necessary capability, documentation, and equipment for the task and that they have procedures in place to (1) perform and document the detailed steps that must be followed to properly accomplish the end play check procedure and lubrication of the jackscrew assembly, including specification of appropriate tools and grease types; (2) perform and document the appropriate steps for verifying that the proper acme screw thread surface finish has been applied; and (3) ensure that appropriate packing procedures are followed for all returned overhauled jackscrew assemblies, regardless of whether the assembly has been designated for storage or shipping.
In plain language (FlightFinder summary)
The Federal Aviation Administration (FAA) is asked to mandate that maintenance facilities overhauling jackscrew assemblies for Douglas DC-9, McDonnell Douglas MD-80/90, and Boeing 717 series airplanes must first obtain special authorization. This authorization would require the facilities to prove they have the necessary capability, documentation, equipment, and procedures for properly performing end play checks, lubrication, verifying acme screw thread surface finish, and packing returned assemblies for storage or shipping.
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 2, 2009 |
| NTSB number | DCA00MA023 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).