# NTSB CHI83IA446: Cessna 401A, N6208Q, Frankfort, IL, September 30, 1983

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: September 30, 1983, 07:15 local (12:15 UTC)
- Place: Frankfort, IL
- Coordinates: 41.490703, -87.830459 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.4907&lon=-87.8305&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): 12058
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI83IA446
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12058/pdf
- Page: https://openairdocs.org/ntsb/CHI83IA446

## Sequence of events

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

- Main gear collapsed, landing - roll
  - landing gear,main gear attachment - failure,total (cause)
  - maintenance,service of aircraft/equipment - improper, company maintenance personnel (cause)

## Analysis

THE RIGHT MAIN LANDING GEAR COLLAPSED DURING LANDING ROLL-THE RIGHT MAIN LANDING GEAR BELLCRANK WAS FOUND TO HAVE FAILED IN INSTANTANEOUS OVERLOAD. THE RIGGING OF MAIN GEAR WAS IMPROPER.

## Aircraft

- Registration: [N6208Q](https://openairdocs.org/deregistered/N6208Q-2014-06-24), registration cancelled 2014-06-24, S/N 401A0008, built 1968 (OpenAirDocs)
- Reported make and model: CESSNA 401A
- Registry model: [Cessna 401A](https://openairdocs.org/model/cessna-401a) (registry code 207590D) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 401A0008
- Airframe hours: 3400
- Engines: CONTINENTAL TSIO-520-E 300 horsepower reciprocating
- Damage: Minor damage
- Flight: Part 135
- Registered owner: Bowman Aviation
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, January 3, 1983, 84 hours before
- Departed: SMD, FT. WAYNE, IN
- Flight plan: IFR
- Airport: C18, Frankfort, runway 27, 3,200 × 50 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 36; commercial, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 2,334 total, 65 in this make and model, 2,211 as pilot in command, 75 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 10 statute miles
- Lowest ceiling: none
- Altimeter: 30.00 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).

- [Incident 19830930072829I](https://openairdocs.org/incident/19830930072829I), Sep 30, 1983: Cessna 401A, Frankfort, IL, Minor damage. Right main landing gear collapsed on the landing roll. Bellcrank assembly cracked from an instantaneous overload.

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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