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Distracted while reprogramming their landing runway from 28 to 32 as they were descending into pit on the jesey RNAV STAR and cleared cross cutta at 10;000; the flight crew of a B737NG failed to note their autoflight mode had reverted from VNAV to speed and their rate of descent had decreased commensurately. They crossed cutta 800 feet high.
| Attributes | |
| ACN | 1123030 |
| Time | |
| Date | 201310 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | PIT.TRACON |
| State Reference | PA |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | STAR JESEY1 |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 209 Flight Crew Type 12000 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Altitude Crossing Restriction Not Met Deviation - Altitude Undershoot Deviation - Procedural Clearance |
Narrative:
We were descending on jesey RNAV arrival into pit and had been given cutta at 10;000 feet. We had programmed 28R into the FMC and the aircraft was descending in VNAV path and on profile. Winds aloft were loaded in descent forecast page. Approaching cutta; ATC changed our runway to 32. This requires re-loading the runway because 28R and 32 have different paths after kirkk. Both of us pulled out the 32 approach plate and got it loaded in the FMC. Somewhere in this sequence of events; the aircraft ['s FMS mode] changed to speed and went high on profile. We were at 261 knots so I told the first officer (pilot flying) to increase descent rate to make cutta at 10;000 feet. He pushed the nose over and made a good effort at recapturing path; but we ended up 800 feet high over cutta.[to prevent this in the future;] whenever the runway or the approach is changed; one pilot must continue monitoring the progress. Once one of the pilots has retrieved the necessary charts; he can resume monitoring. Also; not sure what caused the aircraft to come out of path but may have been higher than forecast winds during descent. This time of year winds are stronger and the descent page must be monitored.
Original NASA ASRS Text
Title: Distracted while reprogramming their landing runway from 28 to 32 as they were descending into PIT on the JESEY RNAV STAR and cleared cross CUTTA at 10;000; the flight crew of a B737NG failed to note their autoflight mode had reverted from VNAV to speed and their rate of descent had decreased commensurately. They crossed CUTTA 800 feet high.
Narrative: We were descending on JESEY RNAV Arrival into PIT and had been given CUTTA at 10;000 feet. We had programmed 28R into the FMC and the aircraft was descending in VNAV PATH and on profile. Winds aloft were loaded in Descent Forecast page. Approaching CUTTA; ATC changed our runway to 32. This requires re-loading the runway because 28R and 32 have different paths after KIRKK. Both of us pulled out the 32 approach plate and got it loaded in the FMC. Somewhere in this sequence of events; the aircraft ['s FMS mode] changed to SPEED and went high on profile. We were at 261 knots so I told the First Officer (Pilot Flying) to increase descent rate to make CUTTA at 10;000 feet. He pushed the nose over and made a good effort at recapturing PATH; but we ended up 800 feet high over CUTTA.[To prevent this in the future;] whenever the runway or the approach is changed; one pilot must continue monitoring the progress. Once one of the pilots has retrieved the necessary charts; he can resume monitoring. Also; not sure what caused the aircraft to come out of PATH but may have been higher than forecast winds during descent. This time of year winds are stronger and the descent page must be monitored.
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.