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Safety Recommendation Details

Safety Recommendation A-74-078
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: AS AN INTERIM MEASURE, INCREASE DH AND VISIBILITY MINIMUMS FOR THOSE APPROACHES WHERE THE COMBINATION OF THE GLIDE SLOPE TRANSMITTER ANTENNA INSTALLATION AND THE AIRCRAFT GLIDE SLOPE RECEIVER ANTENNA INSTALLATION PROVIDE A NOMINAL WHEEL CLEARANCE OF LESS THAN 20 FEET AT THE RUNWAY THRESHOLD.
Original recommendation transmittal letter: PDF
Overall Status: Closed--No Longer Applicable
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Addressee(s) and Addressee Status: FAA (Closed--No Longer Applicable)
Keyword(s):

Safety Recommendation History
From: NTSB
To: FAA
Date: 9/16/1976
Response: Closed-no longer applicable.

From: FAA
To: NTSB
Date: 11/19/1974
Response: WE DO NOT CONCUR. THE PRESENT MINIMUM VISIBILITY OF 1/2 MILE AND DECISION HEIGHT OF 200 FEET IS CONSIDERED ADEQUATE TO ENABLE A PILOT TO ADJUST THE FLIGHT PATH BY VISUAL REFERENCE THROUGH THRESHOLD CROSSING AND LANDING.