# NTSB MIA90LA186: Cessna 421B, N41JT, Pompano Beach, FL, September 22, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 22, 1990, 10:25 local (14:25 UTC)
- Place: Pompano Beach, FL
- Coordinates: 26.229642, -80.130714 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=26.2296&lon=-80.1307&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report October 2, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 32703
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA90LA186
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32703/pdf
- Page: https://openairdocs.org/ntsb/MIA90LA186

## Probable cause

THE FAILURE OF THE PILOT TO INITIATE A GO-AROUND DUE TO BEING HIGH ON FINAL APPROACH AND AS A RESULT, FAILURE TO ATTAIN THE CORRECT POINT OF TOUCHDOWN AND HIS EXCESSIVE APPLICATION OF BRAKES WHICH RESULTED IN FAILURE OF THE RIGHT MAIN TIRE AND LOSS OF DIRECTIONAL CONTROL.

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - proper touchdown point - not attained, pilot in command (cause)
  - brakes(normal) - excessive, pilot in command (cause)
  - landing gear,tire - overload (cause)
  - directional control - not maintained, pilot in command (cause)
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - ground

## Analysis

THE PLT INITIATED A GO-AROUND DURING THE FIRST LANDING APCH DUE TO BEING HIGH ON FINAL. THE PLT REENTERED THE PATTERN TO LAND & DURING THE SECOND LANDING APCH, HE TURNED CLOSE BASE TO AVOID RAINSHOWERS THAT WERE ON THE APCH PATH TO THE RWY. THE ACFT WAS AGAIN HIGH ON FINAL & TOUCHED DOWN MORE THAN 1/2 WAY DOWN THE RWY. DURING BRAKE APPLICATION, THE RT MAIN GEAR TIRE BLEW & THE ACFT THEN YAWED TO THE RT. IT THEN TRAVELLED OFF THE RWY & AS A RESULT, THE LT MAIN GEAR COLLAPSED. THE ACFT CAME TO REST ABOUT 20 FEET OFF THE RWY. POST ACCIDENT EXAM OF THE RT BRAKE ASSY REVEALED NO EVIDENCE OF PRE-EXISTING FAILURE OR MALFUNCTION.

## Aircraft

- Registration: [N41JT](https://openairdocs.org/deregistered/N41JT-2014-10-06), registration cancelled 2014-10-06, S/N 421B-0378, built 1973 (OpenAirDocs)
- Reported make and model: CESSNA 421B
- Registry model: [Cessna 421B](https://openairdocs.org/model/cessna-421b) (registry code 2076014) (OpenAirDocs)
- Registry engine: [Continental GTSIO-520-C](https://openairdocs.org/engine/continental-gtsio-520-c) (registry code 17035, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 421B-0378
- Engines: CONTINENTAL GTSIO-520H 375 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Dynamic Auto Sales, Inc.
- Departed: TMB, MIAMI, FL
- Airport: PMP, Pompano Beach Airpark, runway 10, 3,500 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 21; private; airplane ratings: multi-engine land, single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 300 total, 250 in this make and model, 60 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 140° at 4 knots
- Visibility: 11 statute miles
- Lowest ceiling: none
- Temperature: -0 °F, dew point -0 °F
- Observed at: PMP

## 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 19900922046389A](https://openairdocs.org/incident/19900922046389A), Sep 22, 1990: Cessna 421B, Pompano Beach, FL, Substantial damage. Landed halfway down runway. Blew a tire trying to brake to prevent overun. Veered off runway collapsed left gear.

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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