A-88-110
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: REVISE AIRWORTHINESS DIRECTIVE 87-10-06 TO INCLUDE ACCURATE MEASUREMENT TECHNIQUE(S) SO THAT THE SUBJECT ROCKER ARMS ARE INSPECTED PROPERLY AND INCLUDE INSTRUCTIONS FOR RECONTOURING THE EDGE OF THE OIL DRIP HOLE TO OBTAIN THE SPECIFIED 0.030-INCH RADIUS. IF THE TWO CORRECTIONS ARE IMPRACTICAL, REQUIRE REPLACEMENT OF THE SUBJECT ROCKER ARMS WITH NEW OR SERVICEABLE P/N 17F19353 ROCKER ARMS.
In plain language (FlightFinder summary)
The Federal Aviation Administration is asked to revise Airworthiness Directive 87-10-06 by adding accurate measurement techniques for inspecting rocker arms and instructions for recon touring the oil drip hole edge to a 0.030-inch radius. If these corrections are not practical, the FAA must require replacement of the rocker arms with new or serviceable part number 17F19353 rocker arms.
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 15, 1989 |
| NTSB number | LAX87LA275 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).