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Safety Recommendation Details

Safety Recommendation A-79-045
Details
Synopsis: THIS CORRESPONDENCE IS TO CONFIRM AND AMPLIFY THE DATA GIVEN DURING A TELEPHONE RECOMMENDATION ON JUNE 2, 1979, WHEN OUR DIRECTOR, BUREAU OF TECHNOLOGY CONTACTED YOUR ASSOCIATE ADMINISTRATOR FOR AVIATION STANDARDS. WE RECOMMENDED URGENT ACTIONS REGARDING FURTHER INSPECTION OF DC-10 AIRCRAFT AS A RESULT OF THE MOST RECENT FINDINGS OF OUR INVESTIGATION OF THE AMERICAN AIRLINES DC-10, N110AA, ACCIDENT AT CHICAGO'S O'HARE INTERNATIONAL AIRPORT ON MAY 25, 1979.
Recommendation: ISSUE A TELEGRAPHIC AIRWORTHINESS DIRECTIVE TO REQUIRE AN IMMEDIATE INSPECTION OF ALL DC-10 AIRCRAFT IN WHICH AN ENGINE PYLON ASSEMBLY HAS BEEN REMOVED AND REINSTALLED FOR DAMAGE TO THE WING-MOUNTED PYLON AFT BULKHEAD, INCLUDING ITS FORWARD FLANGE AND THE ATTACHING SPAR WEB AND FASTERNERS. REQUIRE REMOVAL OF ANY SEALANT WHICH MAY HIDE A CRACK IN THE FLANGE AREA AND EMPLOY EDDY-CURRENT OR OTHER APPROVED TECHNIQUES TO ENSURE DETECTION OF SUCH DAMAGE. (URGENT)
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Action
Mode: Aviation
Location: Chicago, IL, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: DCA79AA017
Accident Reports: American Airlines, Inc., DC-10, N110AA
Report #: AAR-79-17
Accident Date: 5/25/1979
Issue Date: 6/4/1979
Date Closed: 8/8/1979
Addressee(s) and Addressee Status: FAA (Closed - Acceptable Action)
Keyword(s):

Safety Recommendation History
From: NTSB
To: FAA
Date: 8/8/1979
Response: The safety board is pleased to note that on june 4, 1979, the faa issued a telegraphic ad, adopting this recommendation. Both recommendations are now classified as closed--acceptable action.

From: FAA
To: NTSB
Date: 7/16/1979
Response: FAA LTR: AN AMENDMENT TO AN AIRWORTHINESS DIRECTIVE ISSUED MAY 28, 1979 AND AMENDED MAY 29, 1979 WAS ISSUED JUNE 4, 1979. WE BELIEVE THAT THIS AMENDMENT IS RESPONSIVE TO THE RECOMMENDATION.