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Safety Recommendation Details

Safety Recommendation A-79-083
Details
Synopsis: ON SEPTEMBER 8, 1977, CHAMPION HOME BUILDERS COMPANY, GATES LEARJET 25B, N999HG, CRASHED SHORTLY AFTER TAKEOFF AT SANFORD, NORTH CAROLINA. ALL FIVE PERSONS ABOARD WERE KILLED, AND THE AIRCRAFT WAS DESTROYED.
Recommendation: THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: PREPARE AND ISSUE AN ADVISORY CIRCULAR TO ALL OWNERS/OPERATORS OF AIRCRAFT EQUIPPED WITH NICAD BATTERIES TO STRESS THE NECESSITY OF AN INSPECTION OF THE BATTERY VENTILATING SYSTEM DURING PREFLIGHT INSPECTIONS.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Alternate Action
Mode: Aviation
Location: Sanford, NC, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: IAD77AA065
Accident Reports: Champion Home Builders, Company, Gates Learjet 25B, N99HG
Report #: AAR-79-15
Accident Date: 9/8/1977
Issue Date: 10/30/1979
Date Closed: 6/13/1980
Addressee(s) and Addressee Status: FAA (Closed - Acceptable Alternate Action)
Keyword(s): Hazmat

Safety Recommendation History
From: NTSB
To: FAA
Date: 6/13/1980
Response: We are pleased to note that in the month of may the faa issued advisory circular 43-16, general aviation airworthiness alert no. 22, to satisfy both recommendations. Recommendation a-79-83 is now classified as closed--acceptable alternate action.

From: FAA
To: NTSB
Date: 5/21/1980
Response: Alert no. 22 in advisory circular 43-16, issued during may 1980, contains the maintenance note pertaining to batter ventilation systems (copy enclosed). We believe that this action fulfills the objective of the above safety recommendations and consider action on these recommendations completed.

From: NTSB
To: FAA
Date: 2/25/1980
Response: These recommendations (a-79-83 and 84) are being maintained in an open--acceptable action status pending the faa's issuance of ac 43-16.We trust that the maintenance notes section of ac 43-16 will include the necessity for properly installed batter ventilation systems.

From: FAA
To: NTSB
Date: 1/28/1980
Response: FAA LTR: BATTERY VENTILATION SYSTEM INTEGRITY IS A DESIGN AND MAINTENANCE FUNCTION RATHER THAN AN ITEM TO BE INCLUDED IN A PILOT'S PREFLIGHT INSPECTION. THE PROBABILITY OF A VENT HOSE BECOMING DETACHED BETWEEN MAINTENANCE OR PERIODIC INSPECTION INTERVALS IS EXTREMELY REMOTE. MAINTENANCE ADVISORY CIRCULAR INFORMATION IS COVERED IN OUR RESPONSE TO NTSB RECOMMENDATION A-79-84. 5/21/80 - FAA LTR IN RESPONSE TO NTSB 2/25/80 FOLLOWUP LTR: ALERT NO. 22 IN ADVISORY CIRCULAR 43-16, ISSUED DURING MAY 1980, CONTAINS THE MAINTENANCE NOTE PERTAINING TO BATTERY VENTILATION SYSTEMS. WE BELIEVE THAT THIS ACTION FULFILLS THE OBJECTIVE OF THE ABOVE RECOMMENDATIONS AND CONSIDER ACTION ON THESE RECOMMENDATIONS COMPLETED.