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Safety Recommendation Details

Safety Recommendation A-71-028
Details
Synopsis: AS A RESULT OF A RECENT INCIDENT INVOLVING A BOEING 747 WHICH ENCOUNTERED SEVERE TURBULENCE, SIX PASSENGERS AND ONE STEWARDESS WERE HOSPITALIZED, AND 15 PASSENGERS AND ONE STEWARDESS WERE TREATED FOR MINOR INJURIES. ALL INJURIES WERE THE RESULT OF THE SEVERE TURBULENCE ENCOUNTERED WHILE CLIMBING THROUGH FLIGHT LEVEL 280 AT AN INDICATED AIR SPEED OF 280 KNOTS.
Recommendation: FAA EXAMINE THESE SEATS WITH A VIEW TOWARD IMPROVING THE CRASHWORTHINESS OF SEATS/HEADRESTS AND ESTABLISHING A DEADLINE DATE FOR COMPLIANCE WITH ANY MODIFICATION REQUIREMENTS.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Action
Mode: Aviation
Location: Nantucket, MA, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: NYC71AN054
Accident Reports: Pan American World Airways, Inc., Boeing 747-121, N739PA
Report #: AAR-72-14
Accident Date: 11/4/1970
Issue Date: 4/7/1971
Date Closed: 3/2/1972
Addressee(s) and Addressee Status: FAA (Closed - Acceptable Action)
Keyword(s):

Safety Recommendation History
From: FAA
To: NTSB
Date: 5/7/1971
Response: THESE AEROTHERM SEATS ARE ONLY ON PAN AM BOEING 747S. A CORRECTIVE SERVICE BULLETIN IS BEING PREPARED AND MODIFICATION PARTS FOR 14 PANAM AIRPLANES, 40% OF PAN AM B-747 FLEET, HAVE BEEN DELIVERED. A DEADLINE DATE WILL BE ESTABLISHED. NO DELAY IS ANTICIPATED.2/16/72 (B) IN A STAFF DISCUSSION BETWEEN THE BAS AND FS-5 THE BUREAU WAS INFORMED THAT THE ENTIRE PAN AM B-747 FLEET, THE ONLY AIRCRAFT UTILIZING AEROTHERM SEATS COACH SECTIONS, HAD BEEN MODIFIED WITH BOEING SERVICE BULLETIN NO. 25-320 WHICH PREVENTS SEPARATION BY INSTALLING A SHORT CABLE TO HEAD REST. THE MODIFICATIONS ORIGINALLY SOUGHT WERE IMPLEMENTED.