NTSB · Safety Recommendation
Safety Recommendation A-76-024
Recommendation
REQUIRE THAT OPERATORS OF AIRCRAFT HAVING THE CHEMICALLY GENERATED PASSENGER SUPPLEMENTAL OXYGEN SYSTEMS INCLUDE DETAILED INFORMATION REGARDING THE OPERATIONAL CHARACTERISTICS OF THESE SYSTEMS IN THE TRAINING PROGRAMS FOR THEIR COCKPIT AND CABIN CREWMEMBERS. SUCH INFORMATION SHOULD INCLUDE FLOW RATES AND THE TIME AND VOLUME LAG IN THE DELIVERY OF OXYGEN. (CLASS II - PRIORITY FOLLOWUP)
Safety Issue and Context
SEVERAL RAPID DECOMPRESSION MISHAPS INVOLVING DC-10 AND L-1011 AIRCRAFT HAVE DISCLOSED PROBLEMS WITH CHEMICALLY GENERATED PASSENGER SUPPLEMENTAL OXYGEN SYSTEMS. THE NATIONAL TRANSPORTATION SAFETY BOARD'S SPECIAL STUDY, "CHEMICALLY GENERATED SUPPLEMENTAL OXYGEN SYSTEMS IN DC-10 AND L-1011 AIRCRAFT"1/INDICATES THAT THESE PROBLEMS ARE PRIMARILY THE RESULT OF A LACK OF UNDERSTANDING OF THE SYSTEM BY BOTH PASSENGERS AND FLIGHT ATTENDANTS.
Response History
June 27, 1977 · NTSB Correspondence · FAA
This is to inform you that the ntsb, by formal board action, has closed out the following safety recommendation: a-76-24, dated 4-29-76, criteria closed--acceptable action.
August 2, 1976 · Recipient Response · FAA
AN AIR CARRIER OPERATIONS BULLETIN WILL BE ISSUED AND INCORPORATE GUIDANCE MATERIAL RELATIVE TO THE FOLLOWING: A. CREWMEMBER TRAINING IN THE OPERATIONAL CHARACTERISTICS OF CHEMICALLY GENERATED PASSENGERSUPPLEMENTAL OXYGEN SYSTEMS ON DC-10 AND L-1011 AIRCRAFT.