# NTSB MIA85LA157: Cessna T310R, N2638N, Boca Raton, FL, April 24, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: April 24, 1985, 18:45 local (23:45 UTC)
- Place: Boca Raton, FL
- Coordinates: 26.339729, -80.080917 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=26.3397&lon=-80.0809&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 31390
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA85LA157
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/31390/pdf
- Page: https://openairdocs.org/ntsb/MIA85LA157

## Sequence of events

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

- Main gear collapsed, taxi - from landing
  - landing gear,gear locking mechanism - failure,total (cause)
- On ground/water encounter with terrain/water, taxi - from landing

## Analysis

THE PLT STATED THAT WHILE TAXIING IN FROM LANDING & UPON EXICUTING A RIGHT TURN INTO THE RAMP THE RIGHT MAIN LANDING GEAR COLLAPSED. INSPECTION OF THE LANDING GEAR REVEALED THAT THE AFT PUSH PULL RETRACT ROD FAILED AT THE ROD END ALLOWING THE COLLAPSE OF THE RIGHT MAIN GEAR.

## Aircraft

- Registration: [N2638N](https://openairdocs.org/deregistered/N2638N-2007-10-11), registration cancelled 2007-10-11, S/N 310R1664, built 1979 (OpenAirDocs)
- Reported make and model: CESSNA T310R
- Registry model: [Cessna T310R](https://openairdocs.org/model/cessna-t310r) (registry code 2074246) (OpenAirDocs)
- Registry engine: [Continental TSIO-520 series](https://openairdocs.org/engine/continental-tsio-520-series) (registry code 17040, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 310R1664
- Airframe hours: 1050
- Engines: CONTINENTAL TSIO-520-B 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: August Dopper
- Airworthiness certificate: Standard, Normal
- Departed: FL04, LAKE CITY, FL
- Airport: BCT, Boca Raton, runway 4, 5,200 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 39; commercial; airplane ratings: multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 3,300 total, 100 in this make and model, 30 in the last 90 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Dusk
- Wind: 90° at 7 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 75 °F, dew point 68 °F
- Altimeter: 29.00 inHg
- Observed at: FLL, 10 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 19850424020579A](https://openairdocs.org/incident/19850424020579A), Apr 24, 1985: Cessna T310R, Boca Raton, FL, Substantial damage. While executing turn onto ramp the right main gear collapsed. Found aft push pull retract rod failed.

## Other investigations on N2638N (2)

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 MIA89LA075](https://openairdocs.org/ntsb/MIA89LA075), Jan 28, 1989: Cessna T310R (N2638N), Pensacola, FL, substantial damage. Probable cause: FAILURE OF THE PILOT TO MAINTAIN THE PROPER AIRSPEED DURING THE APPROACH RESULTING IN LANDING SHORT OF THE RUNWAY AND FAILURE TO MAINTAIN DIRECTIONAL CONTROL DURING THE LANDING ROLL.
- [NTSB MIA87IA011](https://openairdocs.org/ntsb/MIA87IA011), Oct 18, 1986: Cessna 310R (N2638N), West Palm Beach, FL, incident, minor 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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.