<< >> NASA ASRS Report 914541, October 2010

Tracon controller coordinated with tower a cessna flying to a nearby satellite airport. Tower controller clears a B747 for takeoff which conflicts with the cessna. Tower and TRACON controllers reported they expected the other party to take different action.

Attributes
ACN	914541
Time
Date	201010
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	B747 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	Vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Skyhawk 172/Cutlass 172
Flight Phase	Descent
Route In Use	Visual Approach
Flight Plan	IFR
Person 1
Function	Departure
Qualification	Air Traffic Control Fully Certified
Person 2
Function	Handoff / Assist
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy

Narrative:

A C172 IFR inbound to ZZZ1 was on vectors for a visual approach and had been pointed out to ZZZ tower and ZZZ2 tower to pass south and east of ZZZ at 3;000. Towers approved point out then a B747 departed ZZZ runway 14 and checked on climbing to 4;000 and was on a converging course with the C172 south of the airport. Traffic was immediately exchanged but the C172 did not have the B747 in sight. The C172 was given an immediate right turn to 090 and the B747 was given an immediate right turn to 270. Targets passed and conflict alert activated. The C172 then stated that he had the B747 in sight but separation had already been lost.

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Original NASA ASRS Text

Title: Tracon Controller coordinated with Tower a Cessna flying to a nearby satellite airport. Tower Controller clears a B747 for takeoff which conflicts with the Cessna. Tower and TRACON Controllers reported they expected the other party to take different action.

Narrative: A C172 IFR inbound to ZZZ1 was on vectors for a visual approach and had been pointed out to ZZZ Tower and ZZZ2 Tower to pass south and east of ZZZ at 3;000. Towers approved point out then a B747 departed ZZZ Runway 14 and checked on climbing to 4;000 and was on a converging course with the C172 south of the airport. Traffic was immediately exchanged but the C172 did not have the B747 in sight. The C172 was given an immediate right turn to 090 and the B747 was given an immediate right turn to 270. Targets passed and Conflict Alert activated. The C172 then stated that he had the B747 in sight but separation had already been lost.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.