# NTSB LAX83LA182: Cessna 150H, N7243S, Corona, CA, April 7, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 6, 1983, 21:30 local (Apr 7, 1983, 05:30 UTC)
- Place: Corona, CA
- Location: 33.8753° N, 117.5664° W: Placed by OpenAirDocs: center of Corona, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.8753&lon=-117.5664&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 23671
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX83LA182
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/23671/pdf
- Page: https://openairdocs.org/ntsb/LAX83LA182

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - landing gear,nose gear assembly - jammed (cause)
  - maintenance,replacement - improper, other person (cause)
  - directional control - not possible, dual student (contributing factor)
  - ground loop/swerve - uncontrolled, dual student (contributing factor)
  - remedial action - not possible, pilot in command(cfi) (contributing factor)
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - soft (contributing factor)
- Nose over, landing - roll

## Analysis

THE ACFT NOSED OVER DURING THE LANDING ROLL WHILE BEING USED ON A DUAL INSTRUCTIONAL FLIGHT. THE INSTRUCTOR WAS DEMONSTRATING NIGHT LANDING TECHNIQUE TO HER STUDENT. DURING THE LAST LANDING DIRECTIONAL CONTROL WAS LOST WHEN THE NOSEGEAR TOUCHED DOWN. THE ACFT SKIDDED TO THE LEFT OFF THE RUNWAY. THEN THE NOSE GEAR DUG INTO THE SOFT DIRT THE ACFT NOSEDOVER. LATER EXAMINATION OF THE NOSE GEAR ASSEMBLY REVEALED THAT THE COTTER PIN AND NUT (CESSNA PART # MS24665-134 AND AN 310-5) WHICH SECURE THE NOSE GEAR BOLT THROUGH THE AXLE TUBE WERE MISSING. THE BOLT WAS PARTIALLY INSERTED IN THE AXLE TUBE AND THE TIRE WAS PRESSED AGAINST THE INSIDE OF THE NOSE GEAR FORK. THE INSTRUCTOR SAID HER HUSBAND CHANGED THENOSE GEAR TIRE ABOUT 1 MONTH BEFORE THE ACCIDENT.

## Aircraft

- Registration: [N7243S](https://openairdocs.org/aircraft/N7243S), registered now, S/N 15075277, built 1973 (OpenAirDocs)
- Reported make and model: CESSNA 150H
- Registry model: [Cessna 150L](https://openairdocs.org/model/cessna-150l) (registry code 2071826) (OpenAirDocs)
- Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 15067943
- Airframe hours: 4988
- Engines: LYCOMING O-320 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Flite Professionals
- Registered owner: Roy Martin Switzer
- Airworthiness certificate: Standard, Utility
- Last inspection: 100 hour, November 11, 1982, 98 hours before
- Departed: CNO, CHINO, CA
- Airport: L66, Corona Muni, runway 25, 3,200 × 60 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 34; flight instructor, airline transport, flight engineer; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: right; flight hours: 3,400 total, 2,961 as pilot in command, 23 in the last 90 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 230° at 7 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 61 °F, dew point -0 °F
- Altimeter: 29.00 inHg

## 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 19830406014849A](https://openairdocs.org/incident/19830406014849A), Apr 6, 1983: Cessna 150H, Corona, CA, Substantial damage. Lost directional control on landing. Ran off runway. Nosed over in soft sand. Axle cotter pin and nut were missing.

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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