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Safety Recommendation Details

Safety Recommendation A-74-077
Details
Synopsis: ON DECEMBER 17, 1973, IBERIA AIR LINES FLIGHT 933, A DC-10-30, WAS INVOLVED IN AN ACCIDENT AT LOGAN INTERNATIONAL AIRPORT IN BOSTON, MASSACHUSETTS. THE CAPTAIN WAS CONDUCTING AN ILS APPROACH TO RUNWAY 33L WHEN THE AIRCRAFT STRUCK AN APPROACH LIGHT STANCHION AND CRASHED ON THE AIRPORT. THE SKY WAS OBSCURED AND VISIBILITY WAS RESTRICTED BY MODERATE RAIN AND FOG.
Recommendation: RELOCATE AS SOON AS POSSIBLE ILS GLIDE SLOPE TRANSMITTER SITES IN ACCORDANCE WITH FAA ORDER 8260.24 TO PROVIDE A LARGER MARGIN OF SAFETY FOR WIDE-BODIED AIRCRAFT DURING CATEGORY I APPROACHES.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Action
Mode: Aviation
Location: Boston, MA, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: DCA74AZ014
Accident Reports: Iberia Lineas Aereas de Espana, (Iberian Airlines) McDonnell Douglas DC-10-30, EC CBN
Report #: AAR-74-14
Accident Date: 12/17/1973
Issue Date: 9/6/1974
Date Closed: 9/16/1976
Addressee(s) and Addressee Status: FAA (Closed - Acceptable Action)
Keyword(s):

Safety Recommendation History
From: NTSB
To: FAA
Date: 9/16/1976
Response: Closed--acceptable action.

From: FAA
To: NTSB
Date: 11/19/1974
Response: FAA ORDER 8260.24 IS IN THE PROCESS OF BEING REVISED TO REQUIRE THE RELOCATION OF ALL ILS GLIDE PATHS WHICH PROVIDE A THRESHOLD CROSSINGHEIGHT BELOW 47 FEET AT THOSE AIRPORTS AT WHICH CATEGORY D AIRPLANES OPERATE. THE BOSTON GLIDE PATH TRANSMITTER IS SCHEDULED FOR RELOCATION DURING THE FIRST QUARTER FY-76.