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Safety Recommendation Details

Safety Recommendation A-72-141
Details
Synopsis: A PAN AMERICAN BOEING 747 STRUCK THE APPROACH LIGHT STRUCTURE (ALS) FOR RUNWAY 19L WHILE TAKING OFF FROM RUNWAY 01R AT THE SAN FRANCISCO INTERNATIONAL AIRPORT. THE CREW CONTINUED THE TAKEOFF, AND AFTER AN INFLIGHT INSPECTION FOR DAMAGE, DUMPED FUEL AND RETURNED FOR A LANDING AT SAN FRANCISCO. TWO PASSENGERS WERE INJURED DURING THE IMPACT WITH THE ALS AND EIGHT OTHERS SUSTAINED SERIOUS BACK INJURIES DURING THE EVACUATION AFTER THE LANDING.
Recommendation: THE FAA REQUIRE ALL AIR CARRIER AIRCRAFT TO BE EQUIPPED WITH AN AUDIO AND VISUAL EVACUATION ALARM SYSTEM. THIS SYSTEM SHOULD BE CAPABLE OF BEING ACTIVATED IN THE COCKPIT AND AT EACH FLIGHT ATTENDANT'S STATION. THE ALARM SYSTEM SHOULD BE SELF-POWERED SO THAT INTERRUPTION OF THE AIRCRAFT ELECTRICAL SYSTEMS WILL NOT INTERFERE WITH USE OF THE EVACUATION ALARM.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Unacceptable Action
Mode: Aviation
Location: San Francisco, CA, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: 79468
Accident Reports: Pan American World Airways, Inc., Boeing 747, N747PA, Flight 845
Report #: AAR-72-17
Accident Date: 7/30/1971
Issue Date: 5/24/1972
Date Closed: 12/3/1975
Addressee(s) and Addressee Status: FAA (Closed - Unacceptable Action)
Keyword(s):

Safety Recommendation History
From: FAA
To: NTSB
Date: 10/6/1972
Response: FAA LTR: THE FAA AGREES THAT THERE APPEARS TO BE A NEED FOR A SEPARATE SELF-POWERED ALARM SYSTEM. HOWEVER, WHILE SUCH A SYSTEM MAY NEED A CABIN ACTIVATION CAPABILITY, THE FAA FEELS STRONGLY THAT ORDERS FOR AN EMERGENCY EVACUATION MUST ORIGINATE WITH THE FLIGHT DECK CREW, AND THE ACTUAL EVACUATION SHOULD THEN BE DIRECTED BY CREWMEMBERS USING PORTABLE BATTERY-POWERED MEGAPHONES AS REQUIRED BY FAR 121.309(F).