# NTSB CHI85LA011: Mooney M20A, N1093C, Tecumseh, MI, October 5, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: October 5, 1984, 15:45 local (19:45 UTC)
- Place: Tecumseh, MI
- Coordinates: 41.999801, -83.940063 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.9998&lon=-83.9401&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): 12930
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI85LA011
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12930/pdf
- Page: https://openairdocs.org/ntsb/CHI85LA011

## Sequence of events

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

- Complete gear collapsed, landing - flare/touchdown
  - landing gear,normal retraction/extension assembly - cracked (cause)
  - gear extension - not possible, pilot in command (cause)
  - maintenance - improper, pilot in command (contributing factor)
  - maintenance,annual inspection - not performed, pilot in command (contributing factor)

## Analysis

UPON TOUCHDOWN THE LANDING GEAR COLLAPSED. INSPECTION REVEALED THE LANDING GEAR ACTUATOR HANDLE WAS CRACKED APRX 1/2 INCH ABOVE THE ACTUATOR TORQUE TUBE. THE CRACK WAS THROUGH 3/4 OF THE CIRCUMFERENCE AND THERE WAS A 10 DEG BEND IN THE TUBE NEAR THE CRACK. THE CRACK OCCURRED IN A WELD PREVIOUSLY MADE BY THE PLT TO FIX ANOTHER CRACK. THE LAST ANNUAL INSPECTION WAS IN JUNE OF 1977.

## Aircraft

- Registration: [N1093C](https://openairdocs.org/deregistered/N1093C-2000-07-26), registration cancelled 2000-07-26, S/N 1364 (OpenAirDocs)
- Reported make and model: MOONEY M20A
- Registry model: [Mooney M20A](https://openairdocs.org/model/mooney-m20a) (registry code 5870204) (OpenAirDocs)
- Category: Airplane
- Serial number: 1365
- Engines: LYCOMING O-360-A1A 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Jack W. Desser
- Airworthiness certificate: Standard, Normal
- Departed: Y47, NEW HUDSON, MI
- Airport: 3TE, Al Meyers, runway 18, 2,650 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 63; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 1,935 total, 1,920 as pilot in command, 4 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 235° at 20 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 70 °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 19841005057369A](https://openairdocs.org/incident/19841005057369A), Oct 5, 1984: Mooney M20A, Tecumseh, MI, Substantial damage. Gear collapsed on landing. Gear handle cracked where pilot welded it two years before. Last annual 1977.

## Other investigations on N1093C (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 CHI69F0311](https://openairdocs.org/ntsb/CHI69F0311), Oct 12, 1968: Mooney M20A (N1093C), Inkster, MI, destroyed

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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