# Accident 20030720018869A: Cessna 172N, Livermore, CA, July 20, 2003

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: July 20, 2003, 12:30 local time
- Place: Livermore, CA
- Airport: Livermore Municipal Airport
- Damage: Substantial damage
- Phase of flight: Level Off Touchdown
- Operating rules: General operating rules (Part 91)
- Location: 37.6933° N, 121.8203° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=37.6933&lon=-121.8203&mi=10
- Aircraft: N73857, a cancelled registration (https://openairdocs.org/deregistered/N73857-2013-07-16) (OpenAirDocs)
- Registry model: Cessna 172N (registry code 2072434, https://openairdocs.org/model/cessna-172n) (OpenAirDocs)
- Reported make and model: CESSNA 172N
- Pilot flight hours: 335 total
- NTSB investigation: [NTSB LAX03CA247](https://openairdocs.org/ntsb/LAX03CA247) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20030720018869A

## Narrative

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

(-23) ON JULY 20, 2003, AT APPROXIMATELY 1230 PST, PILOT YOON IN ATTEMPTING TO LAND AT LVK, EXPERIENCED A HARD LANDING, CAUSING SUBSTANTIAL DAMAGE TO THE AIRCRAFT. SHE REPORTED IN A STATEMENT SUBMITTED TO THE NTSB, THAT SHE DEPARTED FRESNO, CA AT 1130 HOURS; FLYING DIRECT TO LVK. ON LANDING, PILOT REPORTED SHE BOUNCED THE AIRCRAFT TWO TIMES. SHE REFERRED IN HER STATEMENT TO THESE AS "PORPOISE" TYPE MOTIONS. SHE EXECUTED A GO-AROUND, AND ON THE SECOND APPROACH, LANDED UNEVENTFULLY.

## 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 LAX03CA247](https://openairdocs.org/ntsb/LAX03CA247), Jul 20, 2003: Cessna 172N (N73857), Livermore, CA, substantial damage. Probable cause: The pilot's misjudged landing flare, which resulted in a porpoise pilot induced oscillation and hard landing.

## Other reports on N73857 (2)

Matched to the same aircraft by N-number and date.

- [Accident 19840522025351A](https://openairdocs.org/incident/19840522025351A), May 22, 1984: Cessna 172N (N73857), Ballard, CA, Minor damage. During pre arranged formation flight rear aircraft overtook and collided with N521ST.
- [Accident 19781118036009A](https://openairdocs.org/incident/19781118036009A), Nov 18, 1978: Cessna 172D (N73857), Petaluma, CA, Substantial damage

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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