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Safety Recommendation Details

Safety Recommendation A-78-080
Details
Synopsis: ON MAY 18, 1978, N6423K, A CESSNA 150, AND N121GW, A FALCON FAN JET, COLLIDED IN MIDAIR ABOUT 3 1/2 MILES WEST OF MEMPHIS INTERNATIONAL AIRPORT, MEMPHIS, TENNESSEE. AT THE TIME OF THE COLLISION BOTH AIRCRAFT WERE OPERATING UNDER THE CONTROL JURISDICTION OF MEMPHIS TOWER AT AN ASSIGNED ALTITUDE OF 2,000 FEET M.S.L. AND WERE IN RADIO/RADAR CONTACT WITH DIFFERENT FACILITY CONTROLLERS ON SEPARATE RADIO FREQUENCIES. VISUAL METEOROLOGICAL CONDITIONS PREVAILED AT THE TIME.
Recommendation: EVALUATE OPERATIONAL DATA FOR EACH TRSA LOCATION AND ESTABLISH TWO CATEGORIES OF TRSA'S. THOSE LOCATIONS HANDLING THE LARGEST VOLUME OF TRAFFIC WITH AUTOMATED ATC EQUIPMENT AVAILABLE SHOULD BE DESIGNATED TRSA I LOCATIONS. THE REMAINING AREAS WOULD BE DESIGNATED TRSA II LOCATIONS
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Alternate Action
Mode: Aviation
Location: Memphis, TN, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: DCA78AA013
Accident Reports: Midair Collision Involving a Falcon Jet, N121GW and Cessna 150M, N6423K
Report #: AAR-78-14
Accident Date: 5/18/1978
Issue Date: 10/26/1978
Date Closed: 7/1/1981
Addressee(s) and Addressee Status: FAA (Closed - Acceptable Alternate Action)
Keyword(s):

Safety Recommendation History
From: NTSB
To: FAA
Date: 7/1/1981
Response: We note that since january 1979, the faa has established 48 trsa's bringing the total to 137 and that another 26 locations are being considered as trsa sites. We also note, that in response to notice of proposed rulemaking (nprm) 78-19 tca's have been established in san diego and honolulu and that another 31 locations are being considered as tca sites. The faa's efforts to increase the number of trsa's and tca's satisfy the intent of this recommendation which we classify closed-- acceptable alternate action.

From: FAA
To: NTSB
Date: 4/17/1981
Response: FEDERAL AVIATION ADMINISTRATION LTR: THE NTSB RECOMMENDATION TO CREATE TWO LEVELS OF TRSA'S ENCOMPASSES THE EXISTING TCA/TRSA CRITERIA AND CREATES AN ADDITIONAL LEVEL OF SERVICE. WE BELIEVE THAT IMPLEMENTATION OF THIS RECOMMENDATION WOULD ADD CONSIDERABLE CONFUSION TO THE PRESENT TCS/TRSA CONCEPT. WE ARE CONFIDENT THAT OUR EFFORTS TO INCREASE THE NUMBER OF TCA'S AND TRSA'S, AS DESCRIBED IN THE RESPONSE TO A-78-78, SATISFY THE INTENT OF SAFETY RECOMMENDATION A-78-80. ACCORDINGLY, THE FAA CONSIDERS ACTION ON THIS RECOMMENDATION COMPLETED.

From: NTSB
To: FAA
Date: 3/4/1981
Response: In order to evaluate the progress of a-78-80 & 81, we request an updated status report. Related recommendations a-78-82 & 83, issued on a separate greensheet and mentioned in your letter of january 4, 1979, and july 1, 1980, are being dealt with separately.

From: NTSB
To: FAA
Date: 2/26/1979
Response: Maintained in open status pending resolution.

From: FAA
To: NTSB
Date: 1/9/1979
Response: FAA LTR: WE HAVE ISSUED A NOTICE OF PROPOSED RULE MAKING, WHICH WE BELIEVE WILL MEET OR EXCEED THE INTENT OF YOUR RECOMMENDATION WITHOUT ADDING ADDITIONAL CATEGORIES OF AIRSPACE OR CONTROL SERVICES. WE BELIEVE THE LATTER IS NECESSARY TO FACILITATE PILOT AND PUBLIC UNDERSTANDING OF THE SYSTEM AND THE VARIOUS LEVELS OF SERVICE PROVIDED.