<< >> NASA ASRS Report 82530, February 1988

Commuter small transport altitude deviation excursion from clearance altitude and close proximity with unidentified aircraft.

Attributes
ACN	82530
Time
Date	198802
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	msl bound lower : 4000 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zfw
Operator	common carrier : air carrier
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : instrument pilot : commercial
Experience	flight time total : 3700 flight time type : 150
ASRS Report	82530
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	aircraft : equipment problem dissipated flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	Other
Miss Distance	vertical : 400
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Light to mod chop and at same time was looking for traffic outside. All day long we had advisories of traffic everywhere and on the round-trip before we had a very close near miss (had to take evasive action to avoid the other aircraft. This happened near our approach to the killeen, tx airport). Therefore we were especially on guard for more traffic the rest of the day. These factors, plus the fact that both transponders would not transmit for approximately 5 minutes, worked with both trying to get them to work and eventually succeeded and was at altitude at time.

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Original NASA ASRS Text

Title: COMMUTER SMT ALT DEVIATION EXCURSION FROM CLRNC ALT AND CLOSE PROX WITH UNIDENTIFIED ACFT.

Narrative: LIGHT TO MOD CHOP AND AT SAME TIME WAS LOOKING FOR TFC OUTSIDE. ALL DAY LONG WE HAD ADVISORIES OF TFC EVERYWHERE AND ON THE ROUND-TRIP BEFORE WE HAD A VERY CLOSE NEAR MISS (HAD TO TAKE EVASIVE ACTION TO AVOID THE OTHER ACFT. THIS HAPPENED NEAR OUR APCH TO THE KILLEEN, TX ARPT). THEREFORE WE WERE ESPECIALLY ON GUARD FOR MORE TFC THE REST OF THE DAY. THESE FACTORS, PLUS THE FACT THAT BOTH TRANSPONDERS WOULD NOT XMIT FOR APPROX 5 MINUTES, WORKED WITH BOTH TRYING TO GET THEM TO WORK AND EVENTUALLY SUCCEEDED AND WAS AT ALT AT TIME.

Data retrieved from NASA's ASRS site as of August 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.