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Safety Recommendation Details

Safety Recommendation A-70-024
Details
Synopsis: A TAG AIRLINES, INC., DE HAVILLAND DOVE, N2300H, OPERATING AS FLIGHT 730 OF JANUARY 28, 1970, DEPARTED FROM CLEVELAND'S BURKE LAKEFRONT AIRPORT AT 0738 E.S.T., FOR THE DETROIT CITY AIRPORT WITH TWO CREWMEMBERS AND SEVEN PASSENGERS ON BOARD. THE AIRCRAFT'S RADAR BEACON TARGET DISAPPEARED FROM THE CLEVELAND AIR ROUTE TRAFFIC CONTROL CENTER'S RADAR AT 0749. AT 0922, IT WAS DETERMINED THAT THE AIRCRAFT HAD CRASHED THROUGH THE ICE INTO LAKE ERIE, 26 MILES NORTH-NORTHEAST OF THE CLEVELAND VORTAC. THE BODIES OF FIVE PASSENGERS AND TWO CREWMEMBERS WERE RECOVERED AND IDENTIFIED. TWO PASSENGERS ARE MISSING AND ARE PRESUMED DEAD. THE AIRCRAFT WAS DESTROYED AND PORTIONS OF IT SANK IN 80 FEET OF WATER.
Recommendation: 1. CONDUCT A ONE-TIME INSPECTION ON AN EXPEDITED BASIS BY APPROVED METHODS OF ALL LOWER MAIN WING SPAR FITTINGS P/N 4W.271 ON ALL DE HAVILLAND DH-104 AND 105 AIRCRAFT TO ASSURE THE STRUCTURAL INTEGRITY OF THE AIRCRAFT. 2. REVIEW THE ADEQUACY OF AIRWORTHINESS DIRECTIVE 61-18-3 AND REVISE AS NECESSARY TO ASSURE ADEQUATE SERVICE LIMITS. CONSIDERATION SHOULD ALSO BE GIVEN TO A REDUCTION IN THE PRESENT INSPECTION PERIOD OF 9,970 HOURS AS WELL AS REQUIRING REPETITIVE INSPECTION PERIODS SO AS TO ESTABLISH AN ADEQUATE SERVICE LIFE.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Action
Mode: Aviation
Location: Lake Erie, OH, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: 79648
Accident Reports: TAG Airlines, Inc., De Havilland Dove (DH-104), N2300H
Report #: AAR-71-05
Accident Date: 1/28/1970
Issue Date: 5/27/1970
Date Closed: 12/18/1970
Addressee(s) and Addressee Status: FAA (Closed - Acceptable Action)
Keyword(s):

Safety Recommendation History
From: NTSB
To: FAA
Date: 12/18/1970
Response: Closed--acceptable action.

From: FAA
To: NTSB
Date: 6/29/1970
Response: 6/29/70 ON 5/28/70 FAA ISSUED A TELEGRAPHIC AD WHICH REQUIRED A ONE-TIME INSPECTION OF FUSELAGE JOINT FITTINGS ON ALL DH-104 DOVE AND DH-114 HERON AIRCRAFT WITHIN 25 HOURS OR WITHIN 250 HOURS SINCE LAST INSPECTION, WHICHEVER WAS LATER. THE AD DID NOT APPLY TO THE DH-105 SINCE THIS IS NOT A US CERTIFICATED MODEL. DURING THE WEEK OF JUNE 2, 1970, FAA TECHNICAL PERSONNEL MET WITH REPRESENTATIVES FROM HAWKER SIDDELY AND ARB. DATA EXAMINED IT SHOWED FITTINGS WHICH DID NOT HAVE CHROMED BORES WERE NOT CRITICAL. IT WAS ALSO DISCLOSED THAT NO CHROME-BORE FITTINGS WERE INSTALLED ON THE DH-114 HERON. HOWEVER, SOME HERONS COULD HAVE OBSOLETE LOWER WING ATTACH BOLTS, WHICH MAY MAKE THE FITTING SUSCEPTIBLE TO CORROSION AND PITTING AND CAUSE A FATIGUE FAILURE. ON JUNE 8, 1970, THE FAA REISSUED THEIR AD TO REQUIRE THE CHROME-BORE FITTINGS ON DOVES TO BE REPLACED WITHIN 25 HOURS OF FLIGHT; PRECAUTIONARY INSPECTION OF ALL DOVE FITTINGS WITHIN 100 HOURS OF FLIGHT; REPLACEMENT OF THE OBSOLETE BOLTS AND A PRECAUTIONARY INSPECTION OF THE WING FITTINGS ON HERONS BEFORE 100 HOURS OF FLIGHT. ON JUNE 10, 1970, FAA ISSUED A TELEGRAPHIC AD REQUIRING IMMEDIATE INSPECTION OF ALL DOVES AND HERONS HAVING MORE THAN 5,000 HOURS ON THE FITTINGS AND INSPECTION WITHIN 25 HOURS OF AIRPLANES WITH LESS THAN 5,000 HOURS ON THE FITTINGS. FAA REPORT RECEIVING COMPLAINTS FROM AIR TAXI OPERATORS OF INTERRUPTIONS OF THEIR SERVICE BECAUSE OF INSPECTIONS AND RESCHEDULING. FAA RECEIVED REPORT FROM ENGLAND THAT TESTS RESULTS CONFIRMED THAT SUBJECT FITTING WAS NOT CRACKED BUT RATHER SCORED. FAA THEREFORE REVISED THEIR DIRECTIVE. FAA URGED THE BOARD THAT FUTURE RECOMMENDATIONS BE BASED ON TECHNICAL ADEQUACY SO THAT SUCH BURDENSOME AND COSTLY ACTIONS ARE NOT TAKEN.