# NTSB LAX93LA174: Cessna T310R, N3532G, Groveland, CA, April 9, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 9, 1993, 14:16 local (21:16 UTC)
- Place: Groveland, CA
- Coordinates: 37.849208, -120.009414 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.8492&lon=-120.0094&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report June 30, 1994
- Report: Approved by Office Director
- NTSB case key (mKey): 28364
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX93LA174
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/28364/pdf
- Page: https://openairdocs.org/ntsb/LAX93LA174

## Probable cause

FAILURE OF THE PILOT TO FOLLOW THE AIRPLANE'S CHECKLIST WHICH RESULTED IN AN INADVERTENT GEAR UP LANDING.

## Sequence of events

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

- Gear not extended, landing - flare/touchdown
  - checklist - not followed, pilot in command (cause)
  - wheels up landing - inadvertent, pilot in command (contributing factor)
- In flight collision with terrain/water, landing - roll
  - terrain condition - runway

## Analysis

A CESSNA T310R LANDED GEAR UP ON THE RUNWAY.  THE PILOT ENTERED THE AIRPORT TRAFFIC PATTERN MIDWAY ON THE DOWNWIND LEG AND FORGOT TO EXTEND THE LANDING GEAR.  THE PILOT DID NOT RECALL HEARING THE AIRPLANE'S GEAR WARNING HORN.  AS THE AIRPLANE PROPELLERS STRUCK THE GROUND, THE PILOT ATTEMPTED TO GO AROUND BUT WITHOUT SUCCESS.  THE PILOT REPORTED THAT THE AIRPLANE DID NOT EXPERIENCE ANY  MECHANICAL FAILURES OR MALFUNCTIONS WITH THE AIRPLANE BEFORE THE ACCIDENT.

## Factual narrative

On April 9, 1993, at 1416 hours Pacific daylight time, a Cessna T310R, N3532G, landed gear up on Runway 27 at the Pine Mountain Lake Airport, Groveland, California.  The pilot was completing a visual flight rules personal flight.  The airplane, registered to and operated by the pilot, sustained substantial damage.  The certificated private pilot and passenger were not injured.  Visual meteorological conditions prevailed at the time.  The flight originated at the Nut Tree Airport, Vacaville, California, at about 1345 hours.

The pilot indicated during a telephone interview that he entered the airport traffic pattern midway on the downwind leg and forgot to extend the landing gear.  The pilot did not recall hearing the airplane's gear warning horn.  As the airplane propellers struck the ground, the pilot attempted to go around.  The airplane veered off the runway before coming to a stop.

The pilot stated on his pilot accident report that there were no mechanical failures or malfunctions with the airplane before the accident.

## Aircraft

- Registration: [N3532G](https://openairdocs.org/deregistered/N3532G-2007-07-12), registration cancelled 2007-07-12, S/N 310R0863 (OpenAirDocs)
- Reported make and model: CESSNA T310R
- Registry model: [Cessna T310R](https://openairdocs.org/model/cessna-t310r) (registry code 2074246) (OpenAirDocs)
- Category: Airplane
- Serial number: 0863
- Airframe hours: 1915
- Engines: CONTINENTAL TSIO-520B 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Fricke, Louis E.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, June 5, 1992, 93 hours before
- Departed: O45, VACAVILLE, CA
- Airport: Q68, Pine Mountain Lake, runway 27, 3,625 × 50 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 60; private; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 2,861 total, 1,338 in this make and model, 2,791 as pilot in command, 37 in the last 90 days, 14 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 16 knots
- Visibility: 20 statute miles
- Lowest ceiling: 20,000 ft broken
- Temperature: 66 °F, dew point 41 °F
- Altimeter: 30.00 inHg
- Observed at: SCK, 50 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 19930409009059A](https://openairdocs.org/incident/19930409009059A), Apr 9, 1993: Cessna T310R, Mariposa, CA, Substantial damage. Landed gear up. Pilot stated he forgot to extend the landing gear prior to landing.

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.

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