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A B737 crew requested FL390 as the final altitude but became distracted and failed to set the MCP or FMC which resulted in climb to FL399.
| Attributes | |
| ACN | 1008161 |
| Time | |
| Date | 201205 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | MMID.ARTCC |
| State Reference | FO |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737 Next Generation Undifferentiated |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | MCP |
| Person 1 | |
| Function | Pilot Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Deviation - Altitude Overshoot Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance |
Narrative:
On preflight 40;000 [was] entered in cruise altitude. On climb out [we were] issued FL410; we checked weight and optimal altitude temperature was +17 and we were heavy for FL410; requested FL390 instead. It took a couple of calls to understand ATC's acknowledgement. Somewhere in this process the flight attendant called for [warmer] temperature in cabin. Captain answered and told me to adjust temperature. This interruption distracted [us] from entering FL390 in MCP and FMS. Aircraft climbed to 39;800 before we caught it; then center reminded us we were given 39;000 and [to] descend.
Original NASA ASRS Text
Title: A B737 crew requested FL390 as the final altitude but became distracted and failed to set the MCP or FMC which resulted in climb to FL399.
Narrative: On preflight 40;000 [was] entered in cruise altitude. On climb out [we were] issued FL410; we checked weight and optimal altitude temperature was +17 and we were heavy for FL410; requested FL390 instead. It took a couple of calls to understand ATC's acknowledgement. Somewhere in this process the Flight Attendant called for [warmer] temperature in cabin. Captain answered and told me to adjust temperature. This interruption distracted [us] from entering FL390 in MCP and FMS. Aircraft climbed to 39;800 before we caught it; then center reminded us we were given 39;000 and [to] descend.
Data retrieved from NASA's ASRS site as of July 2013 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.