# NTSB DCA83IA040: Beech B-24R, N9196S, Potomac, MD, September 12, 1983

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: September 12, 1983, 16:45 local (20:45 UTC)
- Place: Potomac, MD
- Coordinates: 39.020904, -77.189834 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.0209&lon=-77.1898&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 office: Major Investigations Division
- NTSB case key (mKey): 15794
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DCA83IA040
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/15794/pdf
- Page: https://openairdocs.org/ntsb/DCA83IA040

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, cruise - normal
  - engine assembly,connecting rod - incorrect (cause)
  - maintenance,major repair - improper, other maintenance personnel (cause)
  - engine assembly,connecting rod - failure,total (cause)
- Forced landing, landing - flare/touchdown

## Analysis

THE ACFT MADE A FORCED LANDING IN A FIELD OF RYE GRASS AFTER THE ENGINE LOST POWER. INVESTIGATION REVEALED THAT A CONNECTING ROD HAD FAILED. AN FAA INSPECTION REVEALED THAT THE CONNECTING ROD RETAINING BOLTS WERE NOT PROPERLY TORQUED DURING A RECENT MAJOR OVERHAUL. THE OWNER DID NOT FILE A 6120.1 REPORT BECAUSE THIS WAS NOT AN 'ACCIDENT'.

## Aircraft

- Registration: [N9196S](https://openairdocs.org/aircraft/N9196S), registered now, S/N MC-370, built 1975 (OpenAirDocs)
- Reported make and model: Beech B-24R
- Registry model: [Beech B24R](https://openairdocs.org/model/beech-b24r) (registry code 1151253) (OpenAirDocs)
- Registry engine: [Lycoming I0360 series](https://openairdocs.org/engine/lycoming-i0360-series) (registry code 41515, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: LYCOMING IO-360-A1B6 200 horsepower reciprocating
- Damage: Minor damage
- Flight: Part 135
- Registered owner: Maryland Airlines
- Airworthiness certificate: Standard, Normal
- Departed: IAD, HERNDON, VA
- Destination: EASTON, MD
- Flight plan: Company VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; commercial; airplane ratings: multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 3,250 total, 650 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Lowest ceiling: none
- Temperature: 84 °F

## 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 19830912063969I](https://openairdocs.org/incident/19830912063969I), Sep 12, 1983: Beech B24R, Potomac, MD, Substantial damage. Oil on windshield, vibration, lost oil pressure and power. Landed in a field. Bogus parts installed in engine.

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.