# NTSB CHI93LA243: Cessna 150, N6097G, Mount Morris, IL, July 4, 1993

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: July 4, 1993, 08:40 local (13:40 UTC)
- Place: Mount Morris, IL
- Coordinates: 42.040962, -89.430076 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.0410&lon=-89.4301&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious
- Status: Completed, report July 25, 1994
- Report: Approved by Office Director
- NTSB case key (mKey): 9233
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI93LA243
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/9233/pdf
- Page: https://openairdocs.org/ntsb/CHI93LA243

## Probable cause

THE PILOT IN COMMAND'S FAILURE TO MAINTAIN ADEQUATE AIRSPEED.

## Sequence of events

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

- Loss of control - in flight, approach - vfr pattern - base turn
  - airspeed - inadequate, pilot in command (cause)
  - stall/spin - inadvertent, pilot in command (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

A WITNESS, WHO IS ALSO A PILOT, REPORTED SEEING N6097G DIRECTLY IN FRONT OF, BUT SOMEWHAT HIGHER THAN HIMSELF WHILE ENTERING THE LANDING PATTERN FOR BARNETT MEMORIAL AIRPORT TO THE SOUTHWEST OF RUNWAY 27. WHILE THE WITNESS WAS TRAVELING EAST ON THE DOWNWIND LEG, N6097G 'SWOOPED DOWN INTO THE PATTERN' INTO A POSITION TO THE LEFT AND SLIGHTLY BEHIND THE WITNESS' AIRCRAFT, ALSO ON THE DOWNWIND LEG.  THE WITNESS REPORTED HEARING A VOICE ON THE RADIO SAY, 'BASE TO FINAL MT. MORRIS,' WHEN N6097G WAS EVEN WITH THE EAST END OF THE RUNWAY. THE WITNESS REPORTED THEN SEEING THE AIRPLANE MAKE A SHARP LEFT TURN AND STATED 'THE LEFT WING TIP 'STALLED' AND WENT DOWNWARD, PIVOTING ON THE LEFT WING TIP, TURNING AROUND 2-3 TIMES.' THEN, JUST PRIOR TO IMPACT WITH THE GROUND, THE PILOT APPEARED TO GAIN SOME CONTROL AS BOTH WINGS WERE LEVEL.  POST ACCIDENT EXAMINATION REVEALED NO EVIDENCE OF PRE-IMPACT MECHANICAL MALFUNCTION WITH THE AIRFRAME, ENGINE, OR ACCESSORIES.

## Factual narrative

On July 4, 1993, about 0840, a Cessna 150; N6097G, sustained substantial damage when it impacted the ground 3/4 miles east of Barnett Memorial Airport, Mt. Morris, Illinois.  The pilot and passenger both received serious injuries.  The flight was originating from Kenosha Municipal Airport, Kenosha, Wisconsin and was operating in visual meteorological conditions under 14 CFR Part 91.

A pilot and witness, Richard Kluver, reported seeing N6097G directly in front of, but somewhat higher than himself while entering the landing pattern for Barnett Memorial Airport to the southwest of the runway 27.  While Mr. Kluver was traveling east on the downwind leg, N6097G "swooped down into the pattern" into a position to the left and slightly behind Kluver, also on the downwind leg.

Kluver reported hearing a voice on the radio say, "base to final Mt. Morris," when N6097G was even with the east end of the runway.  Kluver saw the airplane make a sharp left turn and stated "the left wing tip 'stalled' and went downward, pivoting on the left wing tip, turning around 2-3 times."  Then, just prior to impact with the ground, the pilot appeared to gain some control as both wings were level.  The plane struck the ground at approximately a 45 degree angle, nose first.  Several other witness accounts support Mr. Kluver's statement.

Post accident examination revealed no evidence of pre-impact mechanical malfunction with the airframe, engine, or accessories.

## Aircraft

- Registration: [N6097G](https://openairdocs.org/deregistered/N6097G-1996-04-17), registration cancelled 1996-04-17, S/N 15071597 (OpenAirDocs)
- Reported make and model: CESSNA 150
- Registry model: [Cessna 150K](https://openairdocs.org/model/cessna-150k) (registry code 2071822) (OpenAirDocs)
- Category: Airplane
- Serial number: 15071597
- Engines: CONTINENTAL O-200-A 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Schacht, Wilbur G.
- Registered owner: Wilbur G. Schacht
- Airworthiness certificate: Standard, Normal
- Departed: ENW, KENOSHA, WI

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 69; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 814 total

## Weather

- Conditions: Visual (VMC), Day
- Wind: 190° at 10 knots
- Lowest ceiling: none
- Temperature: 79 °F, dew point 72 °F
- Altimeter: 29.00 inHg
- Observed at: RFD, 17 nm away

## 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 19930704022149A](https://openairdocs.org/incident/19930704022149A), Jul 4, 1993: Cessna 150K, Mount Morris, IL, Substantial damage. Over took traffic on downwind close in banked steeply base to final. Wing stalled spun three times. Partial recover

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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