A-85-002
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: REVISE AIRWORTHINESS DIRECTIVE (AD) 83-14-09 TO REQUIRE WITHIN A SPECIFIED PERIOD THAT THE HORIZONTAL STABILIZER ATTACHMENT STRUCTURE OF EMB-110P1 AND -110P2 MODEL AIRPLANES BE MODIFIED IN A MANNER SIMILAR TO THAT DESCRIBED IN AMENDMENT 39-452, PARAGRAPH (D) OR (E), WHICH REQUIRES THAT THE REPAIR OF ANY CRACKS IN THE WEB OF BULKHEAD 33 AND THE REPLACEMENT OF THE ORIGINAL "C" CHANNELS WITH REDESIGNED CHANNELS AND MODIFIED RIVET PATTERNS. REVIEW THE CRACK REPAIR PROCEDURES OF THE AD FOR ADEQUACY, AND REQUIRE MODIFICATION OF THE PROCEDURES TO ELIMINATE "BUCKING" OF RIVETS AT LOCATIONS DIFFICULT TO ACCES AND OTHER PROCEDURES LIKELY TO DAMAGE EXISTING STRUCTURE. (URGENT)
In plain language (FlightFinder summary)
The Federal Aviation Administration is urged to revise Airworthiness Directive 83-14-09 to require modification of the horizontal stabilizer attachment structure on EMB-110P1 and -110P2 airplanes, including crack repair and replacement of original 'C' channels with redesigned ones and modified rivet patterns. Additionally, the FAA must review the AD's crack repair procedures for adequacy and modify them to stop rivet bucking in hard-to-access areas and other practices that could damage existing structure.
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 | Jun 24, 1986 |
| NTSB number | DCA85AA004 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).