Heading track altitude deviation altitude excursion.

Attributes
ACN	272222
Time
Date	199405
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : boi
State Reference	ID
Altitude	msl bound lower : 35000 msl bound upper : 35450
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Controlling Facilities	artcc : zlc tower : las
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Route In Use	enroute : direct enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 100 flight time total : 4913 flight time type : 2709
ASRS Report	272222
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial
Experience	flight time last 90 days : 150 flight time total : 11000 flight time type : 7000
ASRS Report	272054
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : became reoriented other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I made the takeoff from casper, wy. We were cleared to fly a 265 degree heading, proceed direct to boise, identification, before reaching FL350. Approximately 250 NM east of boise, at FL350, we received a 260 degree heading as a course correction. I had the autoplt coupled and made a heading change.I thought I returned the turn knob to the center detent. I was discussing something with the flight engineer and captain -- the next thing I responded to was the captain telling me we were almost to a 180 degree heading and still turning. I immediately turned to a 260 degree heading. We were still corrected back in the correcting turn when center called and queried us on our position. The center did not indicate any near miss or other traffic as a conflict. The only reason that I can think I did this is fatigue. Although this was my first flight and I laid down in time to get plenty of sleep, I didn't get to sleep until about 1 1/2 hours before I had to get up. Both the other crewmembers had been up all night flying, but were in crew rest prior. Supplemental information from acn 272054: a contributing factor to this situation was that we had been flying all night and were all very tired at the time. As the first officer attempted to correct back to the correct heading, he let the aircraft climb 450 ft.

Original NASA ASRS Text

Title: HDG TRACK ALTDEV ALT EXCURSION.

Narrative: I MADE THE TKOF FROM CASPER, WY. WE WERE CLRED TO FLY A 265 DEG HDG, PROCEED DIRECT TO BOISE, ID, BEFORE REACHING FL350. APPROX 250 NM E OF BOISE, AT FL350, WE RECEIVED A 260 DEG HDG AS A COURSE CORRECTION. I HAD THE AUTOPLT COUPLED AND MADE A HDG CHANGE.I THOUGHT I RETURNED THE TURN KNOB TO THE CTR DETENT. I WAS DISCUSSING SOMETHING WITH THE FE AND CAPT -- THE NEXT THING I RESPONDED TO WAS THE CAPT TELLING ME WE WERE ALMOST TO A 180 DEG HDG AND STILL TURNING. I IMMEDIATELY TURNED TO A 260 DEG HDG. WE WERE STILL CORRECTED BACK IN THE CORRECTING TURN WHEN CTR CALLED AND QUERIED US ON OUR POS. THE CTR DID NOT INDICATE ANY NEAR MISS OR OTHER TFC AS A CONFLICT. THE ONLY REASON THAT I CAN THINK I DID THIS IS FATIGUE. ALTHOUGH THIS WAS MY FIRST FLT AND I LAID DOWN IN TIME TO GET PLENTY OF SLEEP, I DIDN'T GET TO SLEEP UNTIL ABOUT 1 1/2 HRS BEFORE I HAD TO GET UP. BOTH THE OTHER CREWMEMBERS HAD BEEN UP ALL NIGHT FLYING, BUT WERE IN CREW REST PRIOR. SUPPLEMENTAL INFO FROM ACN 272054: A CONTRIBUTING FACTOR TO THIS SIT WAS THAT WE HAD BEEN FLYING ALL NIGHT AND WERE ALL VERY TIRED AT THE TIME. AS THE FO ATTEMPTED TO CORRECT BACK TO THE CORRECT HDG, HE LET THE ACFT CLB 450 FT.

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.