# NTSB CHI83LA282: Lombard Dilley 68, N301LS, Camp Douglas, WI, June 13, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 13, 1983, 16:00 local (21:00 UTC)
- Place: Camp Douglas, WI
- Coordinates: 43.909133, -90.260124 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.9091&lon=-90.2601&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12234
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI83LA282
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12234/pdf
- Page: https://openairdocs.org/ntsb/CHI83LA282

## Sequence of events

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

- Airframe/component/system failure/malfunction, cruise - normal
  - propeller system/accessories,blade - separation (cause)
- Forced landing, landing - flare/touchdown

## Analysis

THE EXPERIMENTAL ACFT LOST A BLADE OF ITS PROPELLER DURING CRUISE FLT. THE PROPELLER HAD BEEN MODIFIED TO OBTAIN MORE RPM. ABOUT 18 INCHES OF ONE BLADE SEPARATED DURING CRUISE AT 6000 FT WITH 2900 RPM AT 200 KTS AIRSPEED. THE ENGINE REMAINED ATTACHED TO THE ACFT BY A 3/16 INCH CABLE WRAPPED AROUND IT AND SECURED TO THE FIRE WALL. THIS IS AN AIR RACINGMODIFICATION. THE ACFT WAS DAMAGED IN THE FORCED LANDING.

## Aircraft

- Registration: [N301LS](https://openairdocs.org/deregistered/N301LS-1994-08-01), registration cancelled 1994-08-01, S/N 1 (OpenAirDocs)
- Reported make and model: LOMBARD DILLEY 68
- Registry model: [Mortensen Dan LOMBARD-DILLEY-68](https://openairdocs.org/model/mortensen-dan-lombard-dilley-68) (registry code 05608K5) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 1
- Airframe hours: 250
- Engines: LYCOMING IO-320 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Daniel E. Mortensen
- Last inspection: Annual, June 3, 1983
- Departed: CMI, CHAMPAIGN, IL
- Destination: SUPERIOR, WI
- Airport: VOK, Volk Field

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; flight instructor, airline transport; airplane ratings: single-engine land, multi-engine land, single-engine sea; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: front; flight hours: 2,019 total, 269 in this make and model, 2,001 as pilot in command, 18 in the last 90 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 225° at 15 knots
- Visibility: 10 statute miles
- Lowest ceiling: 6,500 ft overcast
- Temperature: 81 °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).

- [Accident 19830613024679A](https://openairdocs.org/incident/19830613024679A), Jun 13, 1983: Amtr DILLEY68, Camp Douglas, WI, Substantial damage. Prop blade failed during cruise flight. Steel cable held engine and pilot made emergency landing.

## Other investigations on N301LS (1)

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 LAX83FA446](https://openairdocs.org/ntsb/LAX83FA446), Sep 17, 1983: Mortensen Lombard DILLEY-68 (N301LS), Sun Valley, NV, destroyed

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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