<< >> NASA ASRS Report 142313, March 1990

Near midair collision between 2 light twin aircraft, 1 of which was on training flight with 1 pilot simulating IMC.

Attributes
ACN	142313
Time
Date	199003
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : eca
State Reference	CA
Altitude	msl bound lower : 3300 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sck
Operator	general aviation : instructional
Make Model Name	Small Aircraft, Low Wing, 2 Eng, Retractable Gear
Flight Phase	cruise other cruise other
Route In Use	arrival other enroute : on vectors
Flight Plan	None
Aircraft 2
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	cruise other
Person 1
Affiliation	Other
Function	instruction : trainee
Qualification	pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 40 flight time total : 300 flight time type : 40
ASRS Report	142313
Person 2
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : cfi pilot : commercial pilot : instrument
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 150 vertical : 0
Supplementary
Primary Problem	Ambiguous
Air Traffic Incident	other

Narrative:

During an mei training flight I was flying from the right seat, under the hood. The stockton approach controller, who was very busy, was vectoring us to the livermore ILS. The controller called us as traffic to other aircraft which reported us in sight and himself at 4000'. Other aircraft was a large twin and almost surely mode C equipped. We were 3500' MSL. Controller issued us right turn, 360 degrees for vectors, maintain 3300'. Turn put us in conflict with other aircraft. I heard instrument say something and take over controls. I lifted hood to see windscreen full of other aircraft.

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Original NASA ASRS Text

Title: NMAC BETWEEN 2 LIGHT TWIN ACFT, 1 OF WHICH WAS ON TRAINING FLT WITH 1 PLT SIMULATING IMC.

Narrative: DURING AN MEI TRNING FLT I WAS FLYING FROM THE RIGHT SEAT, UNDER THE HOOD. THE STOCKTON APCH CTLR, WHO WAS VERY BUSY, WAS VECTORING US TO THE LIVERMORE ILS. THE CTLR CALLED US AS TFC TO OTHER ACFT WHICH RPTED US IN SIGHT AND HIMSELF AT 4000'. OTHER ACFT WAS A LARGE TWIN AND ALMOST SURELY MODE C EQUIPPED. WE WERE 3500' MSL. CTLR ISSUED US RIGHT TURN, 360 DEGS FOR VECTORS, MAINTAIN 3300'. TURN PUT US IN CONFLICT WITH OTHER ACFT. I HEARD INSTR SAY SOMETHING AND TAKE OVER CONTROLS. I LIFTED HOOD TO SEE WINDSCREEN FULL OF OTHER ACFT.

Data retrieved from NASA's ASRS site as of July 2007 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.