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Safety Recommendation Details

Safety Recommendation A-93-029
Details
Synopsis: ON SUNDAY, MARCH 22, 1992, ABOUT 2135 EASTERN STANDARD TIME, A FOKKER 28-4000 (F-28), N485US, OPERATING AS USAIR FLIGHT 405, CRASHED DURING AN ATTEMPTED TAKEOFF FROM RUNWAY 13 AT LAGUARDIA AIRPORT, FLUSHING, NEW YORK. THE AIRPLANE WAS OPERATING UNDER TITLE 14, CODE OF FEDERAL REGULATIONS (CFR), PART 121, AS A SCHEDULED PASSENGER FLIGHT FROM JACKSONVILLE, FLORIDA, TO CLEVELAND, OHIO, WITH A STOPOVER AT LAGUARDIA AIRPORT. THERE WERE 47 PASSENGERS, 2 FLIGHTCREW MEMBERS AND 2 CABINCREW MEMBERS ON BOARD. THE CAPTAIN, ONE OF THE CABINCREW MEMBERS, AND 25 PASSENGERS RECEIVED FATAL INJURIES. IMPACT FORCES AND THE SUBSEQUENT FIRE DESTROYED THE AIRPLANE.
Recommendation: THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: STUDY THE FEASIBILITY OF BUILDING A FRANGIBLE ILS ANTENNA ARRAY FOR LAGUARDIA AIRPORT.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Action
Mode: Aviation
Location: FLUSHING, NY, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: DCA92MA025
Accident Reports: Takeoff Stall in Icing Conditions USAIR Flight 405, FOKKER F-28, N485US
Report #: AAR-93-02
Accident Date: 3/22/1992
Issue Date: 3/18/1993
Date Closed: 3/9/1994
Addressee(s) and Addressee Status: FAA (Closed - Acceptable Action)
Keyword(s):

Safety Recommendation History
From: NTSB
To: FAA
Date: 3/9/1994
Response: THE BOARD NOTES THAT THE FAA HAS COMPLETED ITS STUDY OF FEASIBILITY OF A FRANGIBLE ILS ANTENNA ARRAY FOR LAGUARDIA AIRPORT AND HAS CONCLUDED THAT A COMPLETELY FRANGIBLE INSTALLATION CANNOT BE PROVIDED IN THE PRESENT LOCATIONS BECAUSE THE ANTENNA PLATFORM AND THE EQUIPMENT SHELTER REQUIRE STRUCTURAL RIGIDITY FOR THEIR FUNCTION. ADDITIONALLY, ALTERNATE LOCATIONS FOR THE ILS WERE EVALUATED BUT WERE UNSATISFACTORY IN ALL CASES. THE BOARD ACKNOWLEDGES THE FAA'S EFFORT TO CONDUCT A STUDY AS REQUESTED AN THUS CLASSIFIES RECOMMENATION A-93-29 "CLOSED--ACCEPTABLE ACTION."

From: FAA
To: NTSB
Date: 12/9/1993
Response: THE FAA COMPLETED ITS STUDY OF THE FEASIBILITY OF A FRANGIBLE ILS ANTENNA ARRAY FOR LAGUARDIA AIRPORT. THE STUDY CONCLUDED THAT THE CURRENT RUNWAY 13 LOCALIZER MEETS ALL FAA SITING AND OBSTRUCTION CRITERIA. FURTHERMORE, THE LOCALIZER ANTENNA COUNTERPOISE AND ANTENNA ARRAY ARE NEEDED TO MEET THE REQUIREMENTS OF THE ILS TO ENHANCE SAFETY OF THE AIRPORT. ALTERNATE LOCATIONS FOR THE ILS WERE EVALUATED BUT WERE UNSATISFACTORY IN ALL CASES. THE FAA BELIEVES THAT WHILE IT IS POSSIBLE TO MAKE THE RUNWAY 13 LOCALIZER ANTENNA MORE FRANGIBLE, NO APPRECIABLE GAINS WOULD BE ACCRUED IN SAFETY. HOWEVER, A COMPLETELY FRANGIBLE INSTALLATION CANNOT BE PROVIDED IN THE PRESENT LOCATIONS AS THE ANTENNA PLATFORM AND THE EQUIPMENT SHELTER REQUIRE STRUCTURAL RIGIDITY FOR THEIR FUNCTION. FINALLY, THE ANTENNA ARRAY MUST BE SITUATED ON THE EXISTING DIKE SO EVEN IF THE FRANGIBILITY OF THE EXISTING STRUCTURE WAS IMPROVED, AN AIRCRAFT WOULD ALMOST CERTAINLY ALSO STRIKE THE DIKE. I BELIEVE THAT THE FAA HAS COMPLETELY ADDRESSED THIS RECOMMENDATION, AND I CONSIDER THE FAA'S ACTION TO BE COMPLETED.

From: FAA
To: NTSB
Date: 5/27/1993
Response: The FAA is studying the feasibility of a frangible ILS antenna array for LaGuardia Airport. I will keep the Board apprised of the FAA's progress on this safety recommendation.