Air carrier came in close proximity to another air carrier.

Attributes
ACN	127008
Time
Date	198911
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : lit
State Reference	AR
Altitude	msl bound lower : 34800 msl bound upper : 35000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zme
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 150 flight time total : 8000 flight time type : 320
ASRS Report	127008
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 250 flight time total : 4500 flight time type : 1400
ASRS Report	127006
Events
Anomaly	conflict : airborne less severe non adherence : clearance non adherence : required legal separation
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	faa : assigned or threatened penalties
Miss Distance	horizontal : 1320 vertical : 200
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On a vector by memphis center of 315 degree (given as 15 degree right of previous heading), copilot observed a jetliner pass within approximately 1/4 mi behind us and approximately 100' below us. The aircraft was on a heading of approximately 225 degree. Callback conversation with reporter revealed the following: the reporter stated he later discovered that he had a sticking compass which caused the reporter to turn to a heading greater than that assigned by ATC. A 15 degree right turn was issued, however, the actual turn was 65 degree. He said the malfunctioning compass caused the aircraft to be 1/4 to 1 mi off course. As a result. A loss of separation occurred with another air carrier. A pilot deviation was filed by ATC.

Original NASA ASRS Text

Title: ACR CAME IN CLOSE PROX TO ANOTHER ACR.

Narrative: ON A VECTOR BY MEMPHIS CENTER OF 315 DEG (GIVEN AS 15 DEG RIGHT OF PREVIOUS HDG), COPLT OBSERVED A JETLINER PASS WITHIN APPROX 1/4 MI BEHIND US AND APPROX 100' BELOW US. THE ACFT WAS ON A HDG OF APPROX 225 DEG. CALLBACK CONVERSATION WITH REPORTER REVEALED THE FOLLOWING: THE REPORTER STATED HE LATER DISCOVERED THAT HE HAD A STICKING COMPASS WHICH CAUSED THE REPORTER TO TURN TO A HDG GREATER THAN THAT ASSIGNED BY ATC. A 15 DEG RIGHT TURN WAS ISSUED, HOWEVER, THE ACTUAL TURN WAS 65 DEG. HE SAID THE MALFUNCTIONING COMPASS CAUSED THE ACFT TO BE 1/4 TO 1 MI OFF COURSE. AS A RESULT. A LOSS OF SEPARATION OCCURRED WITH ANOTHER ACR. A PLT DEVIATION WAS FILED BY ATC.

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.