# NTSB MKC84LA238: Cessna 401, N101SB, Hutchinson, KS, August 3, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 3, 1984, 04:30 local (09:30 UTC)
- Place: Hutchinson, KS
- Coordinates: 38.059398, -97.910942 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.0594&lon=-97.9109&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 33762
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC84LA238
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33762/pdf
- Page: https://openairdocs.org/ntsb/MKC84LA238

## Sequence of events

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

- Main gear collapsed, taxi - to takeoff
  - wing,wing rib - overload (cause)
  - landing gear,main gear attachment - failure,total (cause)
  - maintenance,service bulletin/letter - disregarded, company maintenance personnel (contributing factor)
- On ground/water encounter with terrain/water, taxi - to takeoff
  - terrain condition - runway

## Analysis

WHILE TAXIING FOR TAKEOFF THE PLT TURNED FROM THE TAXIWAY ONTO THE RWY & THE LEFT MAIN GEAR COLLAPSED. POST CRASH EXAMINATION OF THE LEFT GEAR REVEALED THAT THE LDG GEAR WING RIB SUPPORT BRACKET FAILED ALLOWING THE GEAR TO COLLAPSE. A CESSNA SERVICE LETTER SL-76-2 APPLIES TO THIS PROBLEM BUT WAS NOT COMPLIED WITH.

## Aircraft

- Registration: [N101SB](https://openairdocs.org/deregistered/N101SB-2002-09-23), registration cancelled 2002-09-23, S/N 401-0241, built 1968 (OpenAirDocs)
- Reported make and model: CESSNA 401
- Registry model: [Cessna 401](https://openairdocs.org/model/cessna-401) (registry code 207590C) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 401-0241
- Airframe hours: 5400
- Engines: CONTINENTAL TSIO-520-E 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Operator: Mc Caully Air Service
- Registered owner: Ems Leasing Co.
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, June 11, 1984, 50 hours before
- Departed: HUT, HUTCHINSON, KS
- Destination: DOD, DODGE CITY, KS
- Flight plan: IFR
- Airport: Hutchinson

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 31; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 3,427 total, 700 in this make and model, 230 in the last 90 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 190° at 6 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 70 °F, dew point 55 °F
- Altimeter: 30.00 inHg
- Observed at: ICT, 40 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 19840803039719A](https://openairdocs.org/incident/19840803039719A), Aug 3, 1984: Cessna 401, Hutchinson, KS, Substantial damage. Left main gear collapsed while taxiing for takeoff. Wing rib support bracket failed. Punched a hole in wing rib.

## Other investigations on N101SB (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 MKC84LA117](https://openairdocs.org/ntsb/MKC84LA117), Apr 5, 1984: Cessna 401 (N101SB), Wichita, KS, substantial damage

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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