# NTSB CHI85LA043: Rockwell AC-112A, N1289J, Columbus, OH, November 2, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: November 2, 1984, 17:45 local (22:45 UTC)
- Place: Columbus, OH
- Coordinates: 39.969017, -83.009307 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.9690&lon=-83.0093&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12951
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI85LA043
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12951/pdf
- Page: https://openairdocs.org/ntsb/CHI85LA043

## Sequence of events

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

- Airframe/component/system failure/malfunction, climb - to cruise
  - aircraft preflight - inadequate, pilot in command (cause)
  - electrical system - inoperative (contributing factor)
  - electrical system,alternator - improper (contributing factor)
  - maintenance,annual inspection - poor, other maintenance personnel (cause)
  - electrical system,battery - disabled (contributing factor)
- Main gear collapsed, landing - roll
  - emergency procedure - not understood, pilot in command (contributing factor)

## Analysis

THE ACFT EXPERIENCED A MAIN GEAR COLLAPSE DURING A LANDING ROLL. THE PLT CLAIMED THAT THE ACFT SUFFERED A FAILURE OF THEELECTRICAL SYSTEM SHORTLY AFTER INITIAL TAKEOFF. THE PLT LOWERED THE LNDG GEAR BUT WAS UNABLE TO ACHIEVE A GEAR DOWN & LOCKED INDICATION DUE TO THE ELECTRICAL FAILURE. THE RT MAIN GEAR COLLAPSED DURING LANDING. THIS WAS THE 1ST FLT SINCE AN ANNUAL INSPECTION DURING WHICH THE RT MAIN GEAR HYDRAULIC LINE WAS REPLACED. AFTER THE ACCIDENT, THE ACFT WAS JACKED UP ON THE RWY AND A BUNDLE OF SQUAT SWITCH WIRING FELL OUT OF THE WHEEL WELL. NO BUNDLE TIE WIRE WAS FOUND. AFTER THE ACFT WAS MOVED TO LANE AVIATION THE ENGINE WAS STARTED AND IT WAS DETERMINED THAT THE ALTERNATOR WAS NOT CHARGING. THE AMMETER INDICATED NO CHARGE OR DISCHARGE. WITH AN EXTERNAL JUMPER CABLE ATTACHED TO THE GEAR-UP RELAY A SUCCESSFUL GEAR RETRACTION WAS PERFORMED. AFTER THE BATTERY WAS CHARGED FROM AN EXTERNAL SOURCE, THE ALTERNATOR CAME ON LINE WITH 16.1 VOLTS BEFORE DROPPING OFF LINE AFTER APRX 2 MINS. THE ALTERNATOR PTS WERE PITTED & DIRTY. CLEANING DID NOT HELP.

## Aircraft

- Registration: [N1289J](https://openairdocs.org/deregistered/N1289J-1992-06-15), registration cancelled 1992-06-15, S/N 289 (OpenAirDocs)
- Reported make and model: Rockwell AC-112A
- Registry model: [Rockwell International 112A](https://openairdocs.org/model/rockwell-international-112a) (registry code 7630302) (OpenAirDocs)
- Category: Airplane
- Serial number: 289
- Airframe hours: 602
- Engines: LYCOMING IO-360-C1D6 200 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Francis D. Brown
- Airworthiness certificate: Standard, Normal
- Departed: CMH, COLUMBUS, OH
- Airport: CMH, Columbus International, runway 28, 6,000 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 66; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim

## Weather

- Conditions: Visual (VMC), Day
- Wind: 360° at 8 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 37 °F, dew point 18 °F
- Altimeter: 30.00 inHg
- Observed at: CMH

## 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 19841102059849A](https://openairdocs.org/incident/19841102059849A), Nov 2, 1984: Gulstm 112A, Columbus, OH, Substantial damage. Electrical failure, gravity gear extension, collapsed on rollout. Alternator switch dirty and pitted.

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.