# NTSB MIA91IA059: Cessna 402C, N155PB, Marathon, FL, December 31, 1990

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: December 31, 1990, 13:35 local (18:35 UTC)
- Place: Marathon, FL
- Coordinates: 24.709146, -81.080856 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=24.7091&lon=-81.0809&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report December 30, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 32770
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA91IA059
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32770/pdf
- Page: https://openairdocs.org/ntsb/MIA91IA059

## Probable cause

FATIGUE FAILURE OF A NOSE LANDING GEAR DRAG BRACE ASSEMBLY WHICH CAUSED THE NOSE LANDING GEAR TO COLLAPSE DURING THE LANDING ROLL. CONTRIBUTING TO THE ACCIDENT WAS AN INADEQUATE INSPECTION OF THE AIRPLANE APPROXIMATELY 7 HOURS EARLIER BY COMPANY MAINTENANCE PERSONNEL.

## Sequence of events

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

- Nose gear collapsed, landing - roll
  - landing gear,nose gear assembly - fatigue (cause)
  - maintenance,aaip/progressive program - inadequate, company maintenance personnel (contributing factor)
  - landing gear,nose gear assembly - collapsed (cause)

## Analysis

DURING THE LANDING ROLL, THE NOSE LANDING GEAR COLLAPSED. EXAM OF THE NOSE LANDING GEAR REVEALED THAT THE NOSE LANDING GEAR DRAG BRACE ASSY FAILED DUE TO FATIGUE. THE LANDING GEAR WAS INSPECTED APRX 7 HOURS EARLIER. THE TOTAL TIME & CYCLES OF THE FAILED COMPONENT IS UNK.

## Aircraft

- Registration: [N155PB](https://openairdocs.org/deregistered/N155PB-1995-09-08), registration cancelled 1995-09-08, S/N 402C0009 (OpenAirDocs)
- Reported make and model: CESSNA 402C
- Registry model: [Cessna 402C](https://openairdocs.org/model/cessna-402c) (registry code 207590R) (OpenAirDocs)
- Category: Airplane
- Serial number: 402c0009
- Airframe hours: 10956
- Engines: CONTINENTAL TSIO-520VB 325 horsepower reciprocating
- Damage: Minor damage
- Flight: Part 135
- Operator: Airways International Inc.
- Registered owner: Johan Pat, Ince
- Last inspection: AAIP, December 29, 1990, 7 hours before
- Departed: MIA, MIAMI, FL
- Flight plan: Unknown
- Airport: MTH, Marathon, runway 7, 5,008 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; airline transport, commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 4,400 total, 1,400 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 90° at 8 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 81 °F, dew point 70 °F
- Altimeter: 30.00 inHg
- Observed at: MTH

## 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 19901231064429I](https://openairdocs.org/incident/19901231064429I), Dec 31, 1990: Cessna 402C, Marathon, FL, Minor damage. Nose gear collapsed on landing rollout.

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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