<< >> NASA ASRS Report 114747, June 1989

Light transport had an near midair collision with unidentified small transport flying wrong direction for cruise altitude.

Attributes
ACN	114747
Time
Date	198906
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : eno
State Reference	DE
Altitude	msl bound lower : 8000 msl bound upper : 8500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	cruise other
Route In Use	enroute airway : v268
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	cruise other cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi pilot : instrument pilot : commercial
Experience	flight time last 90 days : 100 flight time total : 3700 flight time type : 2300
ASRS Report	114747
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : nmac other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 0 vertical : 300
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

I was flying an light transport as captain when this situation happened. ZDC advised us that there was traffic at 11 O'clock at 2 mi trailing across our course at 8300'. I called no contact. Then ZDC called traffic at 1 mi same direction and then 1/2 mi away. At 1/2 mi away I saw a twin engine small transport approaching from my left at my altitude. To avoid a possible event I pulled the aircraft up to 8500' which the small transport passed underneath my aircraft. There were 11 passenger on board none were hurt. The small transport was not at the correct altitude on a heading of 120 degree. Small transport was straight and level and did not see my aircraft at all. I would like to commend the ZDC controller for his help in a possible occurrence.

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Original NASA ASRS Text

Title: LTT HAD AN NMAC WITH UNIDENTIFIED SMT FLYING WRONG DIRECTION FOR CRUISE ALT.

Narrative: I WAS FLYING AN LTT AS CAPT WHEN THIS SITUATION HAPPENED. ZDC ADVISED US THAT THERE WAS TFC AT 11 O'CLOCK AT 2 MI TRAILING ACROSS OUR COURSE AT 8300'. I CALLED NO CONTACT. THEN ZDC CALLED TFC AT 1 MI SAME DIRECTION AND THEN 1/2 MI AWAY. AT 1/2 MI AWAY I SAW A TWIN ENGINE SMT APCHING FROM MY LEFT AT MY ALT. TO AVOID A POSSIBLE EVENT I PULLED THE ACFT UP TO 8500' WHICH THE SMT PASSED UNDERNEATH MY ACFT. THERE WERE 11 PAX ON BOARD NONE WERE HURT. THE SMT WAS NOT AT THE CORRECT ALT ON A HDG OF 120 DEG. SMT WAS STRAIGHT AND LEVEL AND DID NOT SEE MY ACFT AT ALL. I WOULD LIKE TO COMMEND THE ZDC CTLR FOR HIS HELP IN A POSSIBLE OCCURRENCE.

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.