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Medium large transport flight crew did not coordinate on clearance instructions. Heading deviation, altitude deviation.
| Attributes | |
| ACN | 134297 |
| Time | |
| Date | 199001 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : dzq |
| State Reference | CA |
| Altitude | msl bound lower : 31000 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zoa |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 80 flight time total : 11000 flight time type : 2000 |
| ASRS Report | 134297 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time total : 9100 |
| ASRS Report | 134169 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude other anomaly other other spatial deviation |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While proceeding direct clovis at FL310, center called us and said to 'fly heading 330 degrees direct klamath falls when able, J189...' I read back the clearance and the captain (PF) asked '330?' I responded 'yes, 330 klamath falls.' obviously the captain thought cleared to altitude FL330. At this time my head was down looking at the map, thinking we both were thinking heading 330 degrees. As I looked up I saw we were climbing and asked the captain, 'were we cleared to FL330?', but as I looked at the heading selector and it had the old heading of 315 degrees on it, I new we had screwed up. As I quickly picked up the microphone to call center, center asked us what our altitude was. I explained our misunderstanding and center cleared us back down to FL310. The problem arose because the captain and I assumed. He assumed we were cleared to FL330 and I assumed he understood heading 330 degrees. Communication both by voice and observation would have prevented this potentially dangerous excursion. Observing the captain's hand going for the altitude selector would have told me a lot.
Original NASA ASRS Text
Title: MLG FLT CREW DID NOT COORDINATE ON CLRNC INSTRUCTIONS. HEADING DEVIATION, ALT DEVIATION.
Narrative: WHILE PROCEEDING DIRECT CLOVIS AT FL310, CENTER CALLED US AND SAID TO 'FLY HDG 330 DEGS DIRECT KLAMATH FALLS WHEN ABLE, J189...' I READ BACK THE CLRNC AND THE CAPT (PF) ASKED '330?' I RESPONDED 'YES, 330 KLAMATH FALLS.' OBVIOUSLY THE CAPT THOUGHT CLRED TO ALT FL330. AT THIS TIME MY HEAD WAS DOWN LOOKING AT THE MAP, THINKING WE BOTH WERE THINKING HDG 330 DEGS. AS I LOOKED UP I SAW WE WERE CLBING AND ASKED THE CAPT, 'WERE WE CLRED TO FL330?', BUT AS I LOOKED AT THE HDG SELECTOR AND IT HAD THE OLD HDG OF 315 DEGS ON IT, I NEW WE HAD SCREWED UP. AS I QUICKLY PICKED UP THE MIC TO CALL CENTER, CENTER ASKED US WHAT OUR ALT WAS. I EXPLAINED OUR MISUNDERSTANDING AND CENTER CLRED US BACK DOWN TO FL310. THE PROB AROSE BECAUSE THE CAPT AND I ASSUMED. HE ASSUMED WE WERE CLRED TO FL330 AND I ASSUMED HE UNDERSTOOD HDG 330 DEGS. COM BOTH BY VOICE AND OBSERVATION WOULD HAVE PREVENTED THIS POTENTIALLY DANGEROUS EXCURSION. OBSERVING THE CAPT'S HAND GOING FOR THE ALT SELECTOR WOULD HAVE TOLD ME A LOT.
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.