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Safety Recommendation Details

Safety Recommendation A-80-114
Details
Synopsis: ON FEBRUARY 12, 1979, AN ALLEGHENY AIRLINES NORD 262 CRASHED ON TAKEOFF FROM CLARKSBURG, WEST VIRGINIA. THE ACCIDENT RESULTED IN TWO FATALITIES AND SEVEN SERIOUS INJURIES. AT THE TIME OF TAKEOFF, THERE WERE LIGHT SNOW SHOWERS AT THE AIRPORT WITH AN ESTIMATED ACCUMULATION RATE OF APPROXIMATELY 1 INCH PER HOUR. DEICING OF THE AIRCRAFT, WITH A 78-PERCENT SOLUTION OF AN ETHYLENE GLYCOL-BASED DEICING FLUID AND WATER, WAS COMPLETED 25 TO 40 MINUTES PRIOR TO TAKEOFF. WITNESSES REPORTEDLY SAW SNOW ON THE EXPOSED HORIZONTAL SURFACES OF THE AIRCAFT WHEN IT TAXIED OUT. THE PROBABLE CAUSE OF THE ACCIDENT WAS DETERMINED TO BE, IN PART, THE LOSS OF LATERAL CONTROL AND LIFT DUE TO SNOW ON THE WINGS AND EMPENNAGE WHEN THE AIRCRAFT CLIMBED OUT OF GROUND EFFECT. THE PRESENCE OF FROZEN SNOW ON THE UPPER HORIZONTAL AIRFOIL SURFACES WAS CONFIRMED BY PHOTOGRAPHS AFTER THE ACCIDENT. ON FEBRUARY 18, 1980, A REDCOAT AIR CARGO, LTD., BRISTOL BRITTANIA 253, CRASHED SHORTLY AFTER TAKEOFF FROM LOGAN INTERNATIONAL AIRPORT, BOSTON. THE ACCIDENT RESULTED IN SEVEN DEATHS AND ONE SERIOUS INJURY. LIGHT SNOW HAD FALLEN THROUGHOUT THE PERIOD OF FLIGHT PREPARATION, TAXI, AND TAKEOFF AT A RATE OF BETWEEN 0.5 AND 0.8 INCH PER HOUR. THE AIRCRAFT HAD BEEN DEICED WITH A 30-PERCENT SOLUTION OF AN ETHYLENE GLYCOL-BASED DEICING FLUID 45 TO 60 MINUTES PRIOR TO TAKEOFF. EVIDENCE INDICATES THAT WET SNOW, WHICH ACCUMULATED ON THE WINGS AND HORIZONTAL STABILIZER PRIOR TO TAKEOFF, WAS A MAJOR FACTOR IN THIS ACCIDENT.
Recommendation: THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: PUBLISH AND DISTRIBUTE TO OPERATORS DETAILED INFORMATION REGARDING THE CHARACTERISTICS OF DEICING/ANTI-ICING FLUIDS AND GUIDELINES REGARDING THEIR USE.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Action
Mode: Aviation
Location: Clarksburg, WV, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: DCA80AA011
Accident Reports: Allegheny Airlines, Inc., Nord 262 Mohawk/Frakes 298, N29824
Report #: AAR-81-03
Accident Date: 2/12/1979
Issue Date: 8/16/1979
Date Closed: 7/1/1981
Addressee(s) and Addressee Status: FAA (Closed - Acceptable Action)
Keyword(s): Hazmat

Safety Recommendation History
From: NTSB
To: FAA
Date: 7/1/1981
Response: In Safety Recommendation A-80-114 we asked the FAA to publish and distribute to operators detailed information regarding the characteris-tics of deicing/anti-icing fluids and guidelines regarding their use. We agree that is not a responsibility of the FAA to compare manufacturer products and thereby promote one brand over another. Data Source: NTSB Recommendations to FAA and FAA Responses The intent of the recommendation was for the FAA to inform aircraft operators of the efficacy and reliability of deicing agents in general, and to provide guidance so that solutions or mixtures are properly prepared and applied to ensure maximum effectiveness against wet snow and ice. The advance copy of Air Carrier Operations Bulletin No. 7-81-1--aircraft deicing and anti-icing procedures addresses this problem and in conjunction with Section 135.227 of the FAA fulfills the intent of Safety Recommendation A-80-114 which we also classify in a closed--acceptable action status. We thank the faa for the issuance of the bulletin.

From: FAA
To: NTSB
Date: 5/26/1981
Response: FAA LTR: THE FAA DID NOT CONCUR IN THIS RECOMMENDATION BASED ON THE BELIEF THAT THE MANUFACTURER, RATHER THAN THE FAA, SHOULD BE RESPONSIBLE FOR THIS ACTION. FAA DOES, HOWEVER, APPRECIATE THE INTENT OF THE RECOMMENDA TION, AND AS STATED IN THE PREVIOUS RESPONSE, ACTION WAS INITIATED TO ISSUE AN OPERATIONS BULLETIN WHICH REQUESTS AIR CARRIER CERTIFICATE HOLDERS TO INSURE THAT DEICING/ANTI-ICING PROCEDURES ARE INCLUDED IN COMPANY MANUALS. AIR CARRIER OPERATIONS BULLETIN NO. 78-1 -- AIRCRAFT DEICING AND ANTI-ICING PROCEDURES COMPLETES FAA'S ACTION REGARDING THIS MATTER.

From: NTSB
To: FAA
Date: 3/30/1981
Response: We note that the FAA plans to issue an operations bulletin requesting air carrier certificate holders to ensure that deicing/anti-icing procedures are included in their manuals. This alternate action will satisfy the intent of A-80-114 which is classified in an open--acceptable alternate action status.

From: FAA
To: NTSB
Date: 2/11/1981
Response: FEDERAL AVIATION ADMINISTRATION LTR: WE BELIEVE THE MANUFACTURER, RATHER THAN THE FAA, SHOULD BE CHARGED WITH THIS ACTION. DETAILED INFORMATION REGARDING THE CHARACTERISTICS OF DEICING/ANTI-ICING FLUIDS AND GUIDELINES REGARDING THEIR USE SHOULD BE OBTAINED FROM THE MANUFACTURER OF THE PRODUCT, SINCE ONLY THIS SOURCE HAS THE TEST DATA TO BACK UP CLAIMS OF THE EFFECTIVENESS OF ITS PRODUCT. WE PLAN TO ISSUE AN OPERATIONS BULLETIN WHICH WILL REQUEST AIR CARRIER CERTIFICATE HOLDERS TO ENSURE THAT DEICING/ANTI-ICING PROCEDURES ARE INCLUDED IN THEIR MANUALS.