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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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An air carrier widebody transport crew admits that it overshot its climb altitude because they forgot to arm the altitude select.
| Attributes | |
| ACN | 339770 |
| Time | |
| Date | 199606 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : say |
| State Reference | AK |
| Altitude | msl bound lower : 34000 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zan |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : pacific |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 203 flight time total : 15000 flight time type : 338 |
| ASRS Report | 339770 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial |
| Experience | flight time last 90 days : 60 flight time total : 6000 flight time type : 1750 |
| ASRS Report | 339492 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance non adherence : far other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : became reoriented |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were level at FL320 approaching oneil on nopac route R580. We had requested FL340 and were waiting for ATC clearance. Just prior to oneil we were given our clearance to climb to FL340. This was a busy time preparing a position report, verifying next position coords, verifying present position, checking distance to next waypoint, etc. The aircraft was on autoplt. The altitude was set in the altitude select window and a climb was started. Both pilots acknowledged the altitude in the window. We reached oneil midway through our climb. The aircraft turned on course. The PF forgot to arm altitude capture and the PNF forgot to verify it on the FMS panel. As a result, we did not catch the deviation until the altitude warning sounded. By the time we reversed our climb, we had deved 800 ft high. We did not follow SOP's because we were busy. We should have waited until we were established on the next leg before changing altitude. Supplemental information from acn 339492: maybe carelessness and a little fatigue on my part, we were rescheduled to leave at XA30 instead of XH00 and I was planning on timing my sleep to wake up accordingly.
Original NASA ASRS Text
Title: AN ACR WDB CREW ADMITS THAT IT OVERSHOT ITS CLB ALT BECAUSE THEY FORGOT TO ARM THE ALT SELECT.
Narrative: WE WERE LEVEL AT FL320 APCHING ONEIL ON NOPAC RTE R580. WE HAD REQUESTED FL340 AND WERE WAITING FOR ATC CLRNC. JUST PRIOR TO ONEIL WE WERE GIVEN OUR CLRNC TO CLB TO FL340. THIS WAS A BUSY TIME PREPARING A POS RPT, VERIFYING NEXT POS COORDS, VERIFYING PRESENT POS, CHKING DISTANCE TO NEXT WAYPOINT, ETC. THE ACFT WAS ON AUTOPLT. THE ALT WAS SET IN THE ALT SELECT WINDOW AND A CLB WAS STARTED. BOTH PLTS ACKNOWLEDGED THE ALT IN THE WINDOW. WE REACHED ONEIL MIDWAY THROUGH OUR CLB. THE ACFT TURNED ON COURSE. THE PF FORGOT TO ARM ALT CAPTURE AND THE PNF FORGOT TO VERIFY IT ON THE FMS PANEL. AS A RESULT, WE DID NOT CATCH THE DEV UNTIL THE ALT WARNING SOUNDED. BY THE TIME WE REVERSED OUR CLB, WE HAD DEVED 800 FT HIGH. WE DID NOT FOLLOW SOP'S BECAUSE WE WERE BUSY. WE SHOULD HAVE WAITED UNTIL WE WERE ESTABLISHED ON THE NEXT LEG BEFORE CHANGING ALT. SUPPLEMENTAL INFO FROM ACN 339492: MAYBE CARELESSNESS AND A LITTLE FATIGUE ON MY PART, WE WERE RESCHEDULED TO LEAVE AT XA30 INSTEAD OF XH00 AND I WAS PLANNING ON TIMING MY SLEEP TO WAKE UP ACCORDINGLY.
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.