# NTSB DEN86LA228: E. E. Schilling Q-2, N21QQ, Billings, MT, August 8, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 8, 1986, 15:30 local (21:30 UTC)
- Place: Billings, MT
- Coordinates: 45.870288, -108.470077 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.8703&lon=-108.4701&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 17034
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN86LA228
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/17034/pdf
- Page: https://openairdocs.org/ntsb/DEN86LA228

## Sequence of events

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

- Loss of engine power, approach - vfr pattern - final approach
  - engine assembly - failure,partial (contributing factor)
  - reason for occurrence undetermined (cause)
- Hard landing, landing - flare/touchdown
  - weather condition - high density altitude (cause)
  - flare - improper, pilot in command (cause)
  - recovery from bounced landing - not possible, pilot in command (cause)
- Loss of control - on ground/water, landing - roll
  - directional control - not maintained, pilot in command (cause)

## Analysis

PLT STATED AFTER ACCIDENT THAT HE HAD A MINOR ENG PROBLEM PRIOR TO DEPARTURE FROM BIG TIMBER. HE STATED THAT THE PROBLEM WAS CORRECTED AND THE FLIGHT COMMENCED TO BILLINGS. WHILE ON FINAL APPROACH TO RWY 04 AT BILLINGS THE PLT EXPERIENCED A PARTIAL LOSS OF PWR. HE WAS ABLE TO LAND ON THE RWY BUT BOUNCED THE ACFT SEVERAL TIMES ON TOUCHDOWN. THE PLT WAS UNABLE TO RECOVER AND THE ACFT DEPARTED THE SIDE OF THE RWY. THE DENSITY ALT WAS CALCULATED TO BE 6,344 FT. NO REASON FOR THE PARTIAL LOSS OF PWR COULD BE DETERMINED.

## Aircraft

- Registration: [N21QQ](https://openairdocs.org/aircraft/N21QQ), registered now, S/N 2005, built 1983 (OpenAirDocs)
- Reported make and model: E. E. SCHILLING Q-2
- Registry model: [Shilling E E Q-2](https://openairdocs.org/model/shilling-e-e-q-2) (registry code 05645MA) (OpenAirDocs)
- Registry engine: [Revmaster 2100](https://openairdocs.org/engine/revmaster-2100) (registry code 52550, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 2005
- Airframe hours: 250
- Engines: Revmaster DT 2100 TURBO reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Michael R. Moore
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, July 31, 1986, 20 hours before
- Departed: 65O, BIG TIMBER, MT
- Flight plan: VFR
- Airport: BIL, Logan Int'L, runway 4, 5,704 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 27; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: center; flight hours: 100 total, 17 in this make and model, 50 as pilot in command, 27 in the last 90 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 20° at 6 knots
- Visibility: 25 statute miles
- Lowest ceiling: none
- Temperature: 90 °F, dew point 66 °F
- Altimeter: 29.00 inHg
- Observed at: BIL

## 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 19860808038559A](https://openairdocs.org/incident/19860808038559A), Aug 8, 1986: Amtrqk QUICKIE2, Billings, MT, Substantial damage. Engine lost power on final. Aircraft made it to the runway but bounced damaging aircraft. Density altitude a factor.

## Other investigations on N21QQ (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 SEA92LA103](https://openairdocs.org/ntsb/SEA92LA103), May 16, 1992: E.E. Shilling Q-2 (N21QQ), Billings, MT, substantial damage. Probable cause: AN UNDETERMINED LOSS OF ENGINE POWER.

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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