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After being cleared comply with a crossing restriction below the transition altitude on descent; the flight crew of a crj-700 determined they would be unable to comply and were recleared to maintain FL180. Because the flying pilot had already set his altimeter to the local pressure setting they initially leveled several hundred feet low.
| Attributes | |
| ACN | 1049842 |
| Time | |
| Date | 201211 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | BNA.Airport |
| State Reference | TN |
| Aircraft 1 | |
| Make Model Name | Regional Jet 700 ER/LR (CRJ700) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Descent |
| Route In Use | STAR PASLY RNAV |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Altimeter |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | First Officer Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Altitude Overshoot Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance |
Narrative:
While on arrival into bna on the new pasly RNAV STAR we were given a descent to cross a fix at 15;000 ft from FL230. Then we were to continue to descend via the STAR eventually to 4;000 ft. After configuring the FMS the descent rate required to meet the restriction was too high for us and we notified ATC we would not be able to comply. ATC reissued a clearance to stop decent at FL180. While in the descent I had already changed the altimeter to transition below FL180. The local altimeter was high so when we noticed the issue we were approximately 300 ft low. ATC almost at the same time issued a clearance to a lower altitude. As the new arrival procedures become more familiar to crews this is less likely to happen.
Original NASA ASRS Text
Title: After being cleared comply with a crossing restriction below the transition altitude on descent; the flight crew of a CRJ-700 determined they would be unable to comply and were recleared to maintain FL180. Because the flying pilot had already set his altimeter to the local pressure setting they initially leveled several hundred feet low.
Narrative: While on arrival into BNA on the new PASLY RNAV STAR we were given a descent to cross a fix at 15;000 FT from FL230. Then we were to continue to descend via the STAR eventually to 4;000 FT. After configuring the FMS the descent rate required to meet the restriction was too high for us and we notified ATC we would not be able to comply. ATC reissued a clearance to stop decent at FL180. While in the descent I had already changed the altimeter to transition below FL180. The local altimeter was high so when we noticed the issue we were approximately 300 FT low. ATC almost at the same time issued a clearance to a lower altitude. As the new arrival procedures become more familiar to crews this is less likely to happen.
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.