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A challenger 605 flight crew; cleared to 'climb via' the shead RNAV SID off runway 1L at las; failed to maintain 9;000 till passing mddog as required when they failed to utilize the autoflight vertical navigation modes properly. Both airmen stressed the need for better instruction in the use of the vertical nav modes and more extensive simulator training in the proper management of those vertical navigation modes when cleared by complex RNAV terminal procedures.
| Attributes | |
| ACN | 1163014 |
| Time | |
| Date | 201404 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | L30.TRACON |
| State Reference | NV |
| Aircraft 1 | |
| Make Model Name | Challenger 605 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Climb |
| Route In Use | SID SHEAD8 |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Autoflight System |
| Person 1 | |
| Function | Pilot Not Flying First Officer |
| Person 2 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance |
Narrative:
Departed runway 1L cleared for shead RNAV SID and cleared to 'climb via.' we briefed use of the FMS and autopilot with first level off of 9;000 feet [crossing at mddog]. Aircraft leveled at 9;000 feet; but flch disarmed. We were instructed that the aircraft must be in V flch mode to make the prescribed level off altitudes at the proper fixes. So the captain reengaged the flch button. The aircraft began a rapid and immediate climb. The captain disengaged autopilot; after I stated that we needed to be at 9;000 feet for the next fix. After a few seconds of hesitation and orientation he began to level the aircraft. We were live with passengers so I feel he did so in a controlled manner. Meanwhile we had gained approximately 1;400 feet and ATC came on reclearing us down to 10;000 feet. They informed us of a phone number to call and the flight continued.I said 'we need to be at 9;000 at mddog' and made the captain aware of his deviation after he re-engaged the flch button.not sure of automation in a V flch climb. Upon reaching 9;000 flch disarmed; not expected.we need more training on use of automation in a V flch climb in the simulator on multiple step up altitudes; such as required on a 'climb via' clearance.
Original NASA ASRS Text
Title: A Challenger 605 flight crew; cleared to 'climb via' the SHEAD RNAV SID off Runway 1L at LAS; failed to maintain 9;000 till passing MDDOG as required when they failed to utilize the autoflight vertical navigation modes properly. Both airmen stressed the need for better instruction in the use of the vertical nav modes and more extensive simulator training in the proper management of those vertical navigation modes when cleared by complex RNAV terminal procedures.
Narrative: Departed Runway 1L cleared for SHEAD RNAV SID and cleared to 'climb via.' We briefed use of the FMS and autopilot with first level off of 9;000 feet [crossing at MDDOG]. Aircraft leveled at 9;000 feet; but FLCH disarmed. We were instructed that the aircraft must be in V FLCH mode to make the prescribed level off altitudes at the proper fixes. So the Captain reengaged the FLCH button. The aircraft began a rapid and immediate climb. The Captain disengaged autopilot; after I stated that we needed to be at 9;000 feet for the next fix. After a few seconds of hesitation and orientation he began to level the aircraft. We were live with passengers so I feel he did so in a controlled manner. Meanwhile we had gained approximately 1;400 feet and ATC came on reclearing us down to 10;000 feet. They informed us of a phone number to call and the flight continued.I said 'we need to be at 9;000 at MDDOG' and made the Captain aware of his deviation after he re-engaged the FLCH button.Not sure of automation in a V FLCH climb. Upon reaching 9;000 FLCH disarmed; not expected.We need more training on use of automation in a V FLCH climb in the simulator on multiple step up altitudes; such as required on a 'climb via' clearance.
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.