# NTSB FTW84IA163: Beech BE-200, N888B, Fort Worth, TX, March 8, 1984

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: March 7, 1984, 20:16 local (Mar 8, 1984, 02:16 UTC)
- Place: Fort Worth, TX
- Coordinates: 32.819034, -97.360237 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=32.8190&lon=-97.3602&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 7 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 21163
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW84IA163
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/21163/pdf
- Page: https://openairdocs.org/ntsb/FTW84IA163

## Sequence of events

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

- Airframe/component/system failure/malfunction, landing - flare/touchdown
  - reason for occurrence undetermined (cause)
  - maintenance - improper, other maintenance personnel
  - landing gear,normal brake system - binding(mechanical)
  - landing gear,gear warning system - incorrect
  - fluid,hydraulic - contamination
- Main gear collapsed, other

## Analysis

ACFT VEERED RT ON TOUCHDOWN. HEAVY BRAKING AND DIFFERENTIAL PWR USED TO MAINTAIN DIRECTIONAL CONTROL. BOTH RT SIDE TIRES AND THE LEFT OUTBOARD TIRE BLEW DURING ROLLOUT. PLT STATED LEFT MAIN GEAR UNSAFE LIGHT ILLUMINATED DURING ROLLOUT. AFTER ENGINES WERE SECURED PAX & CREW EVACUATED ACFT. A PAX STEPPED ON AIRSTEP DOOR TO ENTER ACFT AND RT MAIN GEAR COLLAPSED. INVESTIGATION REVEALED MAIN GEAR COCKPIT LIGHTS WERE WIRED BACKWARDS, THUS THE FALSE UNSAFE WARNING ON LEFT GEAR. RT WHEEL INBOARD BRAKE WAS BINDING WHEN 100 PSI TEST PRESSURE WAS RELEASED. BOTH BRAKE PLATE ASSEMBLIES SHOWED EVIDENCE OF HEAT. DISASSEMBLY OF WHEEL ASS'Y REVEALED PISTON BORES HAD BEEN SANDED DOWN TO POINT WHERE 16 RMS FINISH WAS REMOVED. BOTH SHUTTLE VALVE 'O' RINGS SHOWED DETERIORATION. HYDRAULIC FLUID WAS OF HIGHER THAN NORMAL VISCOSITY AND CONTAINED HIGH CONCENTRATIONS OF CHROMIUN, ALUMINUM AND NICKEL. BRAKE ASS'Y WERE OVERHAULED UNITS INSTALLED 1832 HRS PRIOR TO INCIDENT.

## Aircraft

- Registration: N888B (not matched to a registry record)
- Reported make and model: BEECH BE-200
- Category: Airplane
- Serial number: BB-200
- Airframe hours: 2585
- Engines: P&W PT6A-41 850 horsepower turbo prop
- Damage: Minor damage
- Flight: Public aircraft, Part 91
- Registered owner: State Of Texas
- Airworthiness certificate: Standard, Normal
- Last inspection: Continuous airworthiness, March 1, 1984, 25 hours before
- Departed: JC, SAN JOSE, CA
- Flight plan: IFR
- Airport: FTW, Meacham, runway 16L, 7,500 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 45; commercial, flight instructor, airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 7,900 total, 200 in this make and model, 7,700 as pilot in command, 90 in the last 90 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/bright
- Wind: 200° at 6 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 55 °F, dew point 19 °F
- Altimeter: 30.00 inHg
- Observed at: FTW

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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