NTSB · Safety Recommendation
Safety Recommendation A-76-025
Recommendation
ISSUE AN ADVISORY CIRCULAR (AC) TO ALL PART 121, 123, AND 135.2 CERTIFICATE HOLDERS TO PROVIDE GUIDELINES FOR IMPROVED PASSENGER BRIEFINGS AND PRINTED INSTRUCTIONS FOR THE USE OF CHEMICAL SUPPLEMENTAL OXYGEN SYSTEMS.
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-76-25, dated 4-29-76, criteria closed-acceptable alternate action.
February 11, 1977 · Recipient Response · FAA
Advisory circular referred to in comments related to recommendation a-76-20 will include instructions on: (1) chemical supplemental oxygen systems, and (2) the information that should be included on passenger briefing cards.
December 29, 1976 · NTSB Correspondence · FAA
Advisory circular as recommended.
August 2, 1976 · Recipient Response · FAA
AN AIR CARRIER OPERATIONS BULLETIN WILL BE ISSUED TO INCORPORATE GUIDANCE MATERIAL RELATIVE TO THE FOLLOWING: B. IMPROVED PASSENGER BRIEFINGS AND PRINTED INSTRUCTIONS ON THE USE OF THE SUBJECT SYSTEM.