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Safety Recommendation Details

Safety Recommendation A-93-025
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: IN CONJUNCTION WITH THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION, DETERMINE THE DIFFERENCES, IF ANY, IN EFFECTS ON TAKEOFF PERFORMANCE AND STALL MARGIN WHEN UPPER WING ICE CONTAMINATION IS PRESENT ON SLATTED AND NONSLATTED AIRPLANES; INCLUDE CONSIDERATION OF OPERATIONAL AND AERODYNAMIC FACTORS THAT MAY EXPLAIN THE DISPROPORTIONATE NUMBER OF TAKEOFF ICING ACCIDENTS OF NONSLATTED AIRPLANES.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Unacceptable 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: 12/20/1994
Addressee(s) and Addressee Status: FAA (Closed - Unacceptable Action)
Keyword(s): Icing, Weather

Safety Recommendation History
From: NTSB
To: FAA
Date: 12/20/1994
Response: A-93-024 ASKED THAT THE FAA, IN CONJUNCTION WITH NATIONAL AERONAUTICS & SPACE ADMINISTRATION (NASA), ESTABLISH A WIND TUNNEL OR FLIGHT TEST PROGRAM TO STUDY THE AERODYNAMIC DEGRADATION OF BOTH NONSLATTED & SLATTER AIRPLANE WINDS THAT HAVE UPPER SURFACE CONTAMINATION. A-93-25 ASKED THAT THE FAA, IN CONJUNTION WITH THE NASA, DETERMINE THE DIFFERENCE, IF ANY, IN EFFECTS ON TAKEOFF PERFORMANCE & STALL MARGIN WHEN UPPER WING ICE CONTAMINATION IS PRESENT ON SLATTED & NONSLATTED AIRPLANES; & TO INCLUDE CONSIDERATION OF OPERATIONAL & AERODYNAMIC FACTORS THAT MAY EXPLAIN THE DISPROPORTIONATE NUMBER OF TAKEOFF ICING ACCIDENT OF NONSLATTED AIRPLANE. THE RECOMMENDATIONS WERE INTENDED TO PROMPT THE FAA TO INITIATE A PROGRAM WITH NASA TO ESTABLISH A MORE DEFINITIVE RELATIONSHIP BETWEEN SMALL, PERHAPS VISUALLY UNDETECTABLE, AMOUNT OF CONTAMINATION & THE AERODYNAMIC PERFORMANCE OF AIRPLANES HAVING & NOT HAVING LEADING EDGE SLATS SO THAT APPROPRIATE ACTION COULD BE TAKEN TO ENSURE ADEQUATE TAKEOFF STALL SAFETY MARGINS. THE FAA DOES NOT AGREE THAT SUCH A PROGRAM WOULD YIELD USABLE RESULTS. BECAUSE FAA DOES NOT PLAN TO INITIATE ACTION TO COMPLY WITH THESE RECOMMENDATIONS, THE BOARD CLASSIFIES A-93-24 & A-93-25 "CLOSED--UNACCEPTABLE ACTION."

From: FAA
To: NTSB
Date: 5/27/1993
Response: THE FAA DOES NOT AGREE THAT STUDIES CONDUCTED IN CONJUNCTION WITH NASA WOULD YIELD USABLE RESULTS. THEIR RESPONSE TO A-93-22 PROVIDES THE FAA'S POSITION REGARDING OPERATIONS WITH CONTAMINATION ON THE AERODYNAMIC SURFACES ON SLATTED NONSLATTED WINGS. THE FAA PLANS NO FURTHER ACTION ON THIS RECOMMENDATION.