# Accident 20040410005129A: Amrgen AA5B, San Jose, CA, April 10, 2004

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: April 10, 2004, 13:25 local time
- Place: San Jose, CA
- Airport: San Jose International
- Damage: Substantial damage
- Phase of flight: Ground Taxi, Other Airplane
- Operating rules: General operating rules (Part 91)
- Location: 37.3625° N, 121.9289° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=37.3625&lon=-121.9289&mi=10
- Aircraft: N74270, registered now (https://openairdocs.org/aircraft/N74270) (OpenAirDocs)
- Registry model: Grumman American Avn. AA-5B (registry code 3960105, https://openairdocs.org/model/grumman-american-avn-aa-5b) (OpenAirDocs)
- Registry engine: Lycoming O&VO-360 series (registry code 41514, https://openairdocs.org/engine/lycoming-o-vo-360-series) (OpenAirDocs)
- Reported make and model: AMRGEN AA5B
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 1,350 total, 1,150 in this make and model, 25 in the last 90 days
- NTSB investigation: [NTSB LAX04LA184](https://openairdocs.org/ntsb/LAX04LA184) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20040410005129A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(-23) N74270, A GRUMAN AA5 WAS CLEARED TO TAXI SOUTH BOUND ON TAXIWAY "V" AFTER LANDING, TO THE PARKING AREA BY SJC GROUND AT 22:22 UTC, N949BP A GLOBAL EXPRESS WAS CLEARED TO TAXI FROM THE SJC JET CENTER RAMP AT 22:23 UTC, AND INSTRUCTED TO FOLLOW THE GRUMAN ON "V". N949GP WAS PARKED AT 90 DEGREES TO TAXIWAY "V" WITH THE NOSE POINTING WEST ON THE WEST SIDE OF TAXIWAY "V", N74270 HAD NOT YET PASSED BEHIND N949GP AT THE TIME OF THE N949GP'S CLEARANCE TO TAXI. BASED ON THE TIME STAMP ON THE SJC JET CENTER SURVEILLANCE VIDEO, THE GLOBAL STARTED MOVEMENT ABOUT 22:24:47, ABOUT 22:24:50 THE GRUMAN WAS UPSET BY THE JET BLAST FROM THE GLOBAL AS IT PASSED BEHIND HE GLOBAL. THE JET BLAST LIFTED THE GRUMAN SLIGHTLY AND PUSHED IT SIDEWAYS WITH ENOUGH FORCE TO CAUSE THE LEFT MAIN STRUT ASSEMBLY TO FAIL AND BREAK OFF. IT ALSO CREATED ENOUGH SIDE LOADING ON THE VERTICAL STABILIZER TO CAUSE IT TO TWIST AND BUCKLE THE FUSELAGE ON THE LEFT SIDE AND CRACK THE LEFT REAR SIDE WINDOW OF THE GRUMAN.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB LAX04LA184](https://openairdocs.org/ntsb/LAX04LA184), Apr 10, 2004: Grumman American AA-5B (N74270), San Jose, CA, substantial damage. Probable cause: the pilot's encounter with jet blast effects. Factors in the accident were the pilots' inadequate situational awareness of the potential for the jet blast encounter after hearing the Global Express…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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