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Safety Recommendation Details

Safety Recommendation A-70-025
Details
Synopsis: LEAR JET N1021B, OPERATED BY MACK TRUCK, INC., OF ALLENTOWN, PENNSYLVANIA, CRASHED AT APPROXIMATELY 1107 C.S.T., NOVEMBER 6, 1969, INTO LAKE MICHIGAN WHILE EXECUTING AN INSTRUMENT APPROACH TO RUNWAY 22 AT THE HORLICK-RACINE AIRPORT, RACINE, WISCONSIN. THE FLIGHT HAD DEPARTED FROM BENTON HARBOR, MICHIGAN, ON AN INSTRUMENT FLIGHT RULES FLIGHT PLAN EN ROUTE TO RACINE, WISCONSIN. THE FLIGHT HAD ORIGINATED AT ALLENTOWN EARLIER IN THE DAY. THERE WERE SEVEN PEOPLE ABOARD THE AIRCRAFT; THE PILOT, COPILOT, AND FIVE PASSENGERS,NONE OF WHOM HAVE BEEN FOUND TO DATE.
Recommendation: THE BOARD, THEREFORE, RECOMMENDED THAT THE FAA INVESTIGATE THE FEASIBILITY OF DESIGNATING A RADIAL OF THE MKE VORTAC AS AN ADDITIONAL METHOD OF IDENTIFYING THE MARION FIX. SHOULD THE MKE VORTAC POSSESS THE CAPABILITY OF SUPPORTING THIS REQUIREMENT, THIS RADIAL SHOULD BE MADE A PART OF THE MARION FIX, AND ALL PROCEDURES SHOULD BE MODIFIED ACCORDINGLY.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Action
Mode: Aviation
Location: Racine, WI, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: CHI70A0027
Accident Reports: Mack Truck, Inc., Lear Jet 23A, N1021B
Report #: AAR-70-21
Accident Date: 11/6/1969
Issue Date: 5/20/1970
Date Closed: 6/25/1970
Addressee(s) and Addressee Status: FAA (Closed - Acceptable Action)
Keyword(s):

Safety Recommendation History
From: FAA
To: NTSB
Date: 6/15/1970
Response: THE MARION FIX ON THE FINAL APPROACH COURSE IS A STEPDOWN FIX TO PROVIDE A 100' LOWER MINIMUM DESCENT ALTITUDE (MDA) WHEN THE FIX IS IDENTIFIED. FAA HANDBOOK 8260.3A, PARAGRAPH 288C, U. S. STANDARD FOR TERMINAL PROCEDURES (TERPS), SPECIFIES A MAXIMUM ACCURACY OF PLUS OR MINUS 2 MILES FOR THIS FIX. THEY ARE PRESENTLY UTILIZING AN ADF BEARING FROM THE MILWAUKEE LOM WHICH IS 6.1 MILES FROM THE FINAL APPROACH COURSE WITH A FIX ACCURACY OF .7 OF A MILE. THE FIX ACCURACY WHEN UTILIZING A RADIAL FROM THE MILWAUKEE VORTAC WOULD BE 2.1 MILES DUE TO THE DISTANCE OF 29 MILES FROM THE VORTAC TO THE FINAL APPROACH COURSE. THE VOR LOCATED ON THE TIMMERMAN AIRPORT AT MILWAUKEE IS CLOSE ENOUGH (1.7 MILE FIX ACCURACY) AND COULD BE USED FOR THIS PURPOSE. ALTHOUGH ANY AIRCRAFT MAY REQUEST THAT THE FIX BE IDENTIFIED BY RADAR, THEY CONCUR THAT THE UTILITY OF THE APPROACH PROCEDURE WOULD BE IMPROVED BY PERMITTING AIRCRAFT WITH VOR AND ADF RECEIVERS TO USE THE LOWER MDA SINCE DUEL ADF RECEIVERS ARE NOW REQUIRED. HOWEVER, THIS ADDITION WOULD NOT IMPROVE THE SAFETY OF THE PROCEDURE. THE BOARD'S RECOMMENDATION IS BEING FORWARDED TO THE FAA CENTRAL REGION, WHO ARE BEING ASKED TO ADD A RADIAL FROM THE TIMMERMAN VOR AS A METHOD TO IDENTIFY THE MARION FIX PROVIDING FLIGHT INSPECTION AND PROCEDURES CRITERIA ARE MET.