 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B727-200 climbed through assigned altitude of FL310 when the crew became distraction updating the omega system.
| Attributes | |
| ACN | 356160 |
| Time | |
| Date | 199612 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : csn |
| State Reference | VA |
| Altitude | msl bound lower : 31000 msl bound upper : 31500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 125 flight time total : 15900 flight time type : 12000 |
| ASRS Report | 356160 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 177 flight time total : 5749 flight time type : 1589 |
| ASRS Report | 356485 |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance |
| Independent Detector | 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:
On climb out (block iv autoplt), we were updating our omega over csn VOR as we were passing FL300 for FL310. Both pilots got involved with the omega. We did not hear the altitude alert warning. When the first officer noticed our altitude it was FL314 on his side and FL315 on captain side. He immediately began descent to FL310 assigned. Center questioned our altitude as we were passing FL312 on the way back to FL310. The problem was caused by both pilots getting involved in updating the omega. To prevent this situation, one pilot needs to keep monitoring the airplane while the other pilot does the updating. At conclusion of the flight, the altitude reminder horn was tested and found to be inoperative, and was written up in the aircraft logbook.
Original NASA ASRS Text
Title: B727-200 CLBED THROUGH ASSIGNED ALT OF FL310 WHEN THE CREW BECAME DISTR UPDATING THE OMEGA SYS.
Narrative: ON CLBOUT (BLOCK IV AUTOPLT), WE WERE UPDATING OUR OMEGA OVER CSN VOR AS WE WERE PASSING FL300 FOR FL310. BOTH PLTS GOT INVOLVED WITH THE OMEGA. WE DID NOT HEAR THE ALT ALERT WARNING. WHEN THE FO NOTICED OUR ALT IT WAS FL314 ON HIS SIDE AND FL315 ON CAPT SIDE. HE IMMEDIATELY BEGAN DSCNT TO FL310 ASSIGNED. CTR QUESTIONED OUR ALT AS WE WERE PASSING FL312 ON THE WAY BACK TO FL310. THE PROB WAS CAUSED BY BOTH PLTS GETTING INVOLVED IN UPDATING THE OMEGA. TO PREVENT THIS SIT, ONE PLT NEEDS TO KEEP MONITORING THE AIRPLANE WHILE THE OTHER PLT DOES THE UPDATING. AT CONCLUSION OF THE FLT, THE ALT REMINDER HORN WAS TESTED AND FOUND TO BE INOP, AND WAS WRITTEN UP IN THE ACFT LOGBOOK.
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.