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Without TCAS indicating it, an air carrier jet pilot makes an aggressive evasive maneuver because he perceived an impending conflict. Crew injury resulted.
| Attributes | |
| ACN | 505550 |
| Time | |
| Date | 200103 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : san.airport |
| State Reference | CA |
| Altitude | msl bound lower : 6000 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B767 Undifferentiated or Other Model |
| Flight Phase | descent : intermediate altitude descent : approach |
| Route In Use | approach : instrument precision |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| ASRS Report | 505550 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe |
| Resolutory Action | flight crew : took precautionary avoidance action flight crew : returned to original clearance flight crew : overrode automation |
| Consequence | other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Flight was descending out of 12000 ft to 6000 ft airspeed 270, autoplt and autothrottles were engaged. Captain was heads down entering vydda for localizer 27 into san. First officer saw a rapidly approaching rotating beacon. There was no TCAS RA. The lights were on a constant bearing and with no relative motion. The first officer perceived a possible collision. First officer disconnected the autoplt and aggressively pulled up. He was surprised by the rapid jolt caused by this action, possibly aggravated by the speed brakes being extended. Realized there was no longer a threat. Normal profile was reestablished followed by a normal landing. No passenger were injured. #3 flight attendant went to the hospital for check out. Captain inspected aircraft upon landing and saw no defects
Original NASA ASRS Text
Title: WITHOUT TCAS INDICATING IT, AN ACR JET PLT MAKES AN AGGRESSIVE EVASIVE MANEUVER BECAUSE HE PERCEIVED AN IMPENDING CONFLICT. CREW INJURY RESULTED.
Narrative: FLT WAS DESCENDING OUT OF 12000 FT TO 6000 FT AIRSPEED 270, AUTOPLT AND AUTOTHROTTLES WERE ENGAGED. CAPT WAS HEADS DOWN ENTERING VYDDA FOR LOC 27 INTO SAN. FO SAW A RAPIDLY APCHING ROTATING BEACON. THERE WAS NO TCAS RA. THE LIGHTS WERE ON A CONSTANT BEARING AND WITH NO RELATIVE MOTION. THE FO PERCEIVED A POSSIBLE COLLISION. FO DISCONNECTED THE AUTOPLT AND AGGRESSIVELY PULLED UP. HE WAS SURPRISED BY THE RAPID JOLT CAUSED BY THIS ACTION, POSSIBLY AGGRAVATED BY THE SPEED BRAKES BEING EXTENDED. REALIZED THERE WAS NO LONGER A THREAT. NORMAL PROFILE WAS REESTABLISHED FOLLOWED BY A NORMAL LNDG. NO PAX WERE INJURED. #3 FLT ATTENDANT WENT TO THE HOSPITAL FOR CHK OUT. CAPT INSPECTED ACFT UPON LNDG AND SAW NO DEFECTS
Data retrieved from NASA's ASRS site as of July 2007 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.