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A citation ii flight crew; inexperienced in the aircraft; twice slowed below approach control's speed assignments while on initial approach and were cleared to make a go around due to multiple aircraft too close in trail. During the go around they suffered two altitude excursions while attempting to utilize the autoflight systems; after which they disconnected the autopilot and flew manually to a successful second approach and landing.
| Attributes | |
| ACN | 976679 |
| Time | |
| Date | 201110 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | TEB.Airport |
| State Reference | NJ |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Citation II S2/Bravo (C550) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Landing |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Autoflight System |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Instructor |
| Experience | Flight Crew Last 90 Days 85 Flight Crew Total 2800 Flight Crew Type 60 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Deviation - Speed All Types |
Narrative:
While configuring airplane for landing (flaps; gear); airspeed fell below both our 210 KTS and 190 KTS assignments by ATC. Note that both gear-down and landing flaps limitations are 176 KTS for this aircraft.with the field in sight at approximately 1;700 MSL; approach control directed us to go around; upon our response of '... Field in sight...' ATC replied 'negative; I've got other aircraft too close behind you ...'our go around clearance was to climb/maintain 2;000; speed 250 KTS; with vectors. Upon initiating the go around--power-up; new heading; and setting 2;000 in the altitude sel window--the autopilot was engaged. While accelerating the aircraft climbed rapidly to 2;200 whereupon we reset the auto-flight instruments to correct the error (pitch-down; re-set altitude sel). The aircraft rapidly over-corrected to approximately 1;800. We then disengaged the autopilot completely and promptly stabilized manually at 2;000 ft. Both deviations were queried by ATC; with pilot not flying response: 'correcting'. The remainder of the go around; second approach and landing were accomplished in normal fashion.this was the first IMC event in high-density airspace for both pilots in this particular aircraft as this is a relatively new owner/operation. After a thorough de-brief regarding this incident we have implemented a testing/training program to reinforce auto-flight system limitations; procedures and performance in similar scenarios. This program includes procedures and VMC practice at higher-than-typical approach speeds to better 'fit in' with high density traffic flows.
Original NASA ASRS Text
Title: A Citation II flight crew; inexperienced in the aircraft; twice slowed below Approach Control's speed assignments while on initial approach and were cleared to make a go around due to multiple aircraft too close in trail. During the go around they suffered two altitude excursions while attempting to utilize the autoflight systems; after which they disconnected the autopilot and flew manually to a successful second approach and landing.
Narrative: While configuring airplane for landing (flaps; gear); airspeed fell below both our 210 KTS and 190 KTS assignments by ATC. Note that both gear-down and landing flaps limitations are 176 KTS for this aircraft.With the field in sight at approximately 1;700 MSL; Approach Control directed us to go around; upon our response of '... field in sight...' ATC replied 'Negative; I've got other aircraft too close behind you ...'Our go around clearance was to climb/maintain 2;000; speed 250 KTS; with vectors. Upon initiating the go around--power-up; new heading; and setting 2;000 in the ALT SEL window--the autopilot was engaged. While accelerating the aircraft climbed rapidly to 2;200 whereupon we reset the auto-flight instruments to correct the error (pitch-down; re-set ALT SEL). The aircraft rapidly over-corrected to approximately 1;800. We then disengaged the autopilot completely and promptly stabilized manually at 2;000 FT. Both deviations were queried by ATC; with pilot not flying response: 'correcting'. The remainder of the go around; second approach and landing were accomplished in normal fashion.This was the first IMC event in high-density airspace for both pilots in this particular aircraft as this is a relatively new owner/operation. After a thorough de-brief regarding this incident we have implemented a testing/training program to reinforce auto-flight system limitations; procedures and performance in similar scenarios. This program includes procedures and VMC practice at higher-than-typical approach speeds to better 'fit in' with high density traffic flows.
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.