# NTSB LAX00LA137: Grumman American AG5B, N228ER, Oakland, CA, January 26, 2000

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: January 26, 2000, 15:35 local (23:35 UTC)
- Place: Oakland, CA
- Location: 37.7213° N, 122.2212° W: Placed by OpenAirDocs at OAKLAND SAN FRANCISCO BAY (OAK), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=37.7213&lon=-122.2212&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 17, 2001
- Report: Approved by Office Director
- NTSB case key (mKey): 51203
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX00LA137
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/51203/pdf
- Page: https://openairdocs.org/ntsb/LAX00LA137

## Probable cause

The inadvertent porpoise and improper remedial action of the pilot during the landing attempt.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Nose gear collapsed, landing
  - porpoise/pilot-induced oscillation - continued, pilot in command (cause)
  - recovery from bounced landing - not followed, pilot in command (contributing factor)

## Analysis

The pilot was attempting to practice touch-and-go landings.  During the landing attempt, the airplane began to bounce. The pilot said he thought the bouncing would settle down, and instead, it got worse to the point that it broke off the nose gear strut.

## Factual narrative

On January 26, 2000, at 1535 hours Pacific standard time, a Grumman American AG5B, N228ER, porpoised on landing and subsequently broke off the nose wheel at the Oakland, California, airport.  The private pilot, the owner and operator of the aircraft, was not injured.  The airplane sustained substantial damage.  The purpose of the local area personal flight was to practice touch-and-go landings.  The airplane departed from Hayward, California, approximately 1500, and was destined for Oakland when the accident occurred.  Visual meteorological conditions prevailed at the time of the accident.

The Federal Aviation Administration notified the Safety Board of the accident on March 27, 2000.

The pilot stated that once he touched down on runway 27L, the airplane began bouncing.  He said the bouncing got worse, and finally the nose pitched down and the nose wheel hit the runway, which broke off the nose gear strut.

## Aircraft

- Registration: [N228ER](https://openairdocs.org/aircraft/N228ER), registered now, S/N 10119, built 1992 (OpenAirDocs)
- Reported make and model: Grumman American AG5B
- Registry model: [American General Acft AG5B](https://openairdocs.org/model/american-general-acft-ag5b) (registry code 3990100) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 10119
- Airframe hours: 1750
- Engines: Lycoming O-360-A4K 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Oilver A. Baer
- Airworthiness certificate: Standard, Utility; Standard, Normal
- Last inspection: Annual, August 1, 1999, 103 hours before
- Departed: HWD, HAYWARD, CA
- Destination: OAK, CA
- Airport: OAK, Metropolitan Oakland Intl, runway 27L, 6,212 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 80; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 1,090 total, 415 in this make and model, 1,000 as pilot in command, 40 in the last 90 days, 12 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 260° at 5 knots
- Visibility: 10 statute miles
- Lowest ceiling: 16,000 ft broken
- Temperature: 54 °F, dew point 46 °F
- Altimeter: 30.00 inHg
- Observed at: OAK, 1 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 20000126006229A](https://openairdocs.org/incident/20000126006229A), Jan 26, 2000: Amrgen AG5B, Oakland, CA, Substantial damage. (-23) Pilot stated he flew to Oakland to perform touch and go's. on first landing he bounced the aircrft and let it bounce a few more times hoping it would…

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.