CL300 flight crew reports an altitude deviation over archi during the quiet bridge visual approach i...

Attributes
ACN	1246472
Time
Date	201503
Local Time Of Day	1201-1800
Place
Locale Reference	SFO.Airport
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Challenger 300
Operating Under FAR Part	Part 135
Flight Phase	Initial Approach
Route In Use	Visual Approach
Flight Plan	IFR
Component
Aircraft Component	Autopilot
Person 1
Function	Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Altitude Crossing Restriction Not Met Deviation - Altitude Overshoot Deviation - Procedural Published Material / Policy Deviation - Procedural Clearance

Narrative:

On descent into sfo; we were cleared for the quiet bridge visual approach at 10;000 and told to cross archi at 8;000. We started our descent from 10;000 to 8;000 with 8;000 in the altitude window. As the aircraft failed to capture the selected altitude flying pilot disconnected the autopilot and pitched up to stop the descent and maintain 8;000. The aircraft only went down to 7;800 feet during his prompt correction. After crossing archi intersection; we continued our descent and visual approach. Norcal did not say anything to us about the altitude and the aircraft was below 8;000 for less than 10 seconds.the prompt corrective action of the flying pilot prevented an altitude deviation. Continuing to utilize good situational awareness and scanning of instruments will help keep the number and severity of such incidents very small.

Original NASA ASRS Text

Title: CL300 flight crew reports an altitude deviation over ARCHI during the Quiet Bridge Visual approach into SFO. The MCP was properly programed but the autopilot captured late and was quickly corrected by the pilot flying.

Narrative: On descent into SFO; we were cleared for the Quiet Bridge Visual approach at 10;000 and told to cross ARCHI at 8;000. We started our descent from 10;000 to 8;000 with 8;000 in the altitude window. As the aircraft failed to capture the selected altitude flying pilot disconnected the autopilot and pitched up to stop the descent and maintain 8;000. The aircraft only went down to 7;800 feet during his prompt correction. After crossing ARCHI intersection; we continued our descent and visual approach. NORCAL did not say anything to us about the altitude and the aircraft was below 8;000 for less than 10 seconds.The prompt corrective action of the flying pilot prevented an altitude deviation. Continuing to utilize good situational awareness and scanning of instruments will help keep the number and severity of such incidents very small.

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.

CL300 flight crew reports an altitude deviation over archi during the quiet bridge visual approach into sfo. The MCP was properly programed but the autopilot captured late and was quickly corrected by the pilot flying.