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G450 flightcrew reports exceeding altitude and speed requirements during the RUUDY3 with the autopilot engaged in LNAV and VNAV and autothrottles set for 200 KTS.
| Attributes | |
| ACN | 981850 |
| Time | |
| Date | 201111 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | TEB.Airport |
| State Reference | NY |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Gulfstream IV / G350 / G450 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Initial Climb |
| Route In Use | SID RUUDY |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Altitude Hold/Capture |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Pilot Flying First Officer |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Altitude Overshoot Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Speed All Types |
Narrative:
[We were on a] VMC ruudy 2 departure. LNAV and VNAV engaged and approaching 1;500 ft MSL for initial level off restriction. Some bit of turbulence (maybe?) caused the yaw damper and autopilot to disconnect. We overshot the restriction prior to the 'cross at 1;500 ft MSL' requirement. During the correction we overshot the descent back to 1;500 ft MSL and finally corrected to 1;500 ft MSL prior to the crossing restriction. The airspeed was around 270 KTS IAS as the autothrottles didn't respond during the altitude corrections. Speed control became a factor and was corrected immediately to conform with requirements for altitude and airspace. No actual violations occurred during this event.
Original NASA ASRS Text
Title: G450 flightcrew reports exceeding altitude and speed requirements during the RUUDY3 with the autopilot engaged in LNAV and VNAV and autothrottles set for 200 KTS.
Narrative: [We were on a] VMC RUUDY 2 Departure. LNAV and VNAV engaged and approaching 1;500 FT MSL for initial level off restriction. Some bit of turbulence (maybe?) caused the yaw damper and autopilot to disconnect. We overshot the restriction prior to the 'cross at 1;500 FT MSL' requirement. During the correction we overshot the descent back to 1;500 FT MSL and finally corrected to 1;500 FT MSL prior to the crossing restriction. The airspeed was around 270 KTS IAS as the autothrottles didn't respond during the altitude corrections. Speed control became a factor and was corrected immediately to conform with requirements for altitude and airspace. No actual violations occurred during this event.
Data retrieved from NASA's ASRS site as of April 2012 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.