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B737-800 captain reported that; according to ATC; during descent the aircraft was 700 feet high over a crossing restriction of 8000 feet. The captain stated the aircraft was in VNAV path the whole descent with no scratchpad advisories.
| Attributes | |
| ACN | 1406651 |
| Time | |
| Date | 201612 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | Mixed |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Route In Use | STAR ZZZ |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 208 |
| Person 2 | |
| Function | Pilot Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 204 Flight Crew Type 1700 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Altitude Crossing Restriction Not Met Deviation - Altitude Undershoot Deviation - Procedural Published Material / Policy |
Narrative:
After clearing the runway in ZZZ; tower advised we were to call a land line number because of a possible deviation. Neither the first officer nor I had any idea (or could envision) what they were possibly referring to. After completion of the parking checklist at the gate; I then contacted our dispatcher and asked for the ATC desk and then explained the situation. After talking with someone; I then learned that TRACON said we crossed zzzzz intersection on the STAR at 8700 ft instead of the published 8000 ft. The aircraft was in VNAV path the whole descent with no scratchpad advisories. The whole VNAV system needs scrapping; sids and stars are too complex; and aircraft software is way too lax.
Original NASA ASRS Text
Title: B737-800 Captain reported that; according to ATC; during descent the aircraft was 700 feet high over a crossing restriction of 8000 feet. The Captain stated the aircraft was in VNAV PATH the whole descent with no scratchpad advisories.
Narrative: After clearing the runway in ZZZ; Tower advised we were to call a land line number because of a possible deviation. Neither the FO nor I had any idea (or could envision) what they were possibly referring to. After completion of the Parking Checklist at the gate; I then contacted our Dispatcher and asked for the ATC desk and then explained the situation. After talking with someone; I then learned that TRACON said we crossed ZZZZZ intersection on the STAR at 8700 ft instead of the published 8000 ft. The aircraft was in VNAV PATH the whole descent with no scratchpad advisories. The whole VNAV system needs scrapping; SIDS and STARS are too complex; and aircraft software is way too lax.
Data retrieved from NASA's ASRS site 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.