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Safety Recommendation Details

Safety Recommendation A-93-140
Details
Synopsis: ON MARCH 31, 1993, THE NO.2 ENGINE AND ENGINE PYLON SEPARATED FROM JAPAN AIRLINES, INC., FLIGHT 46E, A BOEING 747-121, THAT HAD BEEN WET-LEASED FROM EVERGREEN INTERNATIONAL AIRLINES, INC., SHORTLY AFTER DEPARTURE FROM ANCHORAGE INTERNATIONAL AIRPORT, ANCHORAGE, ALASKA. THE ACCIDENT OCCURRED ABOUT 1234 ALASKA STANDARD TIME. THE FLIGHT WAS A SCHEDULED CARGO FLIGHT FROM ANCHORAGE TO CHICAGO-O'HARE INTERNATIONAL AIRPORT, CHICAGO, ILLINOIS. ON BOARD THE AIRPLANE WERE THE FLIGHTCREW, CONSISTING OF THE CAPTAIN, THE FIRST OFFICER, AND THE SECOND OFFICER, AND TWO NONREVENUE COMPANY EMPLOYEES. THE AIRPLANE WAS SUBSTANTIALLY DAMAGED DURING THE SEPARATION OF THE ENGINE. NO ONE ON BOARD THE AIRPLANE OR ON THE GROUND WAS INJURED.
Recommendation: THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: ISSUE AN AIRWORTHINESS DIRECTIVE TO REQUIRE COMPLIANCE WITH BOEING SERVICE BULLETIN 747-54-2160.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Exceeds Recommended Action
Mode: Aviation
Location: ANCHORAGE, AK, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: DCA93MA033
Accident Reports: In-Flight Engine Separation Japan Airlines, Inc., Flight 46E Boeing 747-121, N473EV
Report #: AAR-93-06
Accident Date: 3/31/1993
Issue Date: 11/15/1993
Date Closed: 4/18/1995
Addressee(s) and Addressee Status: FAA (Closed - Exceeds Recommended Action)
Keyword(s):

Safety Recommendation History
From: NTSB
To: FAA
Date: 4/18/1995
Response: THE BOARD NOTES THAT THE FAA HAS ISSUED AN AD THAT REQUIRES COMPLIANCE WITH BOEING SB 747-54-2160. ADDITIONALLY, THE BOARD IS PLEASED THAT THE FAA'S ACTION EXCEEDS THE BOARD'S RECOMMENDATION IN THAT THE AD REQUIRES INSPECTION OF THE OUTBOARD ENGINE PYLONS AS WELL AS THE INBOARD ENGINE PYLONS. THEREFORE, THE BOARD CLASSIFIES A-93-140 "CLOSED--EXCEEDS RECOMMENDED ACTION."

From: FAA
To: NTSB
Date: 1/5/1995
Response: THE FAA AGREES WITH THE INTENT OF THIS RECOMMENDATION & ON AUGUST 17, 1994, ISSUED AIRWORTHINESS DIRECTIVE 94-17-17 APPLICABLE TO CERTAIN BOEING MODEL 747 SERIES AIRPLANES. THIS AD REQUIRES INSPECTION OF THE INBOARD & OUTBOARD STRUT FORWARD LOWER SPAR CHORDS, STIFFENERS, & WEB TO DETECT CRACKS & LOOSE FASTENERS IN ACCORDANCE WITH THE PROCEDURES DESCRIBED IN SERVICE BULLETIN 747-54-2160; REPAIR OF THE CHORDS, STIFFENERS, OR WEB, IF NECESSARY; & REPLACEMENT OF ANY LOOSE FASTENER. I CONSIDER THE FAA'S ACTION TO BE COMPLETED ON THIS RECOMMENDATION.

From: NTSB
To: FAA
Date: 6/17/1994
Response: THE BOARD NOTES THAT THE FAA IS CURRENTLY CONSIDERING ISSUING A NOTICE OF PROPOSED RULEMAKING TO ADDRESS THE SB. PENDING ADDTIONAL CORRESPONDENCE ON THIS ISSUE, THE BOARD CLASSIFIES A-93-140 "OPEN--AWAIT RESPONSE."

From: FAA
To: NTSB
Date: 2/24/1994
Response: THE FAA AGREES WITH THE INTENT OF THIS RECOMMENDATION & IS CONSIDERING THE ISSUANCE OF A NOTICE OF PROPOSED RULEMAKING TO ADDRESS THIS ISSUE. I WILL PROVIDE THE BOARD WITH A COPY OF ANY DOCUMENT THAT MAY BE ISSUED.