# NTSB SEA07CA224: Cessna 421B, N968J, Oceanside, CA, August 8, 2007

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: August 7, 2007, 20:15 local (Aug 8, 2007, 03:15 UTC)
- Place: Oceanside, CA
- Coordinates: 33.218055, -117.351387
- Nearby events: https://openairdocs.org/map.md?lat=33.2181&lon=-117.3514&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report November 29, 2007
- Report: Approved by Office Director
- NTSB case key (mKey): 66404
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA07CA224
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/66404/pdf
- Page: https://openairdocs.org/ntsb/SEA07CA224

## Probable cause

The collapse of the right main landing gear during the landing roll for undetermined reason, which resulted in a loss of directional control and collision with a fence.

## Sequence of events

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

- Airframe/component/system failure/malfunction, landing - roll
  - landing gear,main gear - collapsed (cause)
- Loss of control - on ground/water, landing - roll
  - directional control - not possible, pilot in command (cause)
- On ground/water collision with object, landing - roll
  - object - fence

## Analysis

According to the pilot, he had recently purchased the airplane in Greenville, Mississippi.  The airplane had not been flown for several years prior to the purchase, and an annual inspection was completed on the airplane on July 15, 2007.  On the morning of the accident, the pilot departed Greenville in the airplane for a cross country flight to his home in California.  The accident occurred during landing on the last leg of the flight.  During the landing rollout, the right main landing gear collapsed.  The pilot was unable to maintain directional control of the airplane, and it departed the right side of the runway and collided with a fence.  The reason for the right main landing gear collapsing was not determined.

## Factual narrative

According to the pilot, he had recently purchased the airplane in Greenville, Mississippi.  The airplane had not been flown for several years prior to the purchase, and an annual inspection was completed on the airplane on July 15, 2007.  On the morning of the accident, the pilot departed Greenville in the airplane for a cross country flight to his home in California.  The accident occurred during landing on the last leg of the flight.  During the landing rollout, the right main landing gear collapsed.  The pilot was unable to maintain directional control of the airplane, and it departed the right side of the runway and collided with a fence.  The reason for the right main landing gear collapsing was not determined.

## Aircraft

- Registration: [N968J](https://openairdocs.org/deregistered/N968J-2017-07-06), registration cancelled 2017-07-06, S/N 421B0012, built 1970 (OpenAirDocs)
- Reported make and model: Cessna 421B
- Registry model: [Cessna 421B](https://openairdocs.org/model/cessna-421b) (registry code 2076014) (OpenAirDocs)
- Registry engine: [Continental GTSIO-520-C](https://openairdocs.org/engine/continental-gtsio-520-c) (registry code 17035, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 421B0012
- Engines: Continental GTSIO-520 reciprocating; Continental GTSIO-520 reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Airworthiness certificate: Standard, Normal
- Departed: P19, Chandler, AZ
- Destination: OKB, Oceanside, CA
- Airport: OKB, Oceanside Municipal, runway 24, 2,712 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 47; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 3; flight hours: 4,000 total, 90 in this make and model, 30 in the last 30 days

## Weather

- Conditions: Visual (VMC), Dusk

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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