# NTSB CHI92FA110: Cessna 310R, N1328G, Superior, WI, March 11, 1992

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: March 11, 1992, 13:50 local (19:50 UTC)
- Place: Superior, WI
- Coordinates: 46.670097, -92.080253 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=46.6701&lon=-92.0803&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report May 28, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 15285
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI92FA110
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/15285/pdf
- Page: https://openairdocs.org/ntsb/CHI92FA110

## Probable cause

INADEQUATE AIRSPEED, WHICH RESULTED IN AN INADVERTENT STALL/SPIN, AND FAILURE OF THE INSTRUCTOR PILOT TO TAKE SUFFICIENT REMEDIAL ACTION TO PREVENT THE LOSS OF CONTROL.

## Sequence of events

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

- Loss of control - in flight, approach
  - airspeed - not maintained (cause)
  - stall/spin - inadvertent (cause)
  - remedial action - not attained, pilot in command(cfi) (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

DURING AN INSTRUMENT TRAINING FLIGHT, A COMMERCIAL PILOT RATED STUDENT & AN INSTRUMENT INSTRUCTOR PILOT (CFII) FLEW TO DULUTH TO PRACTICE APPROACHES, THEN RETURNED TO THEIR HOME BASE AT SUPERIOR.  FBO PERSONNEL AT SUPERIOR HEARD THE CREW MAKING AIRPORT TRAFFIC ADVISORIES, WHILE MAKING APPROACHES AT THE RICHARD I BONG AIRPORT.  SUBSEQUENTLY, THE AIRCRAFT CRASHED ABOUT 1.6 MILES SOUTHEAST OF THE AIRPORT.  GROUND IMPACT OCCURRED IN A STEEP DESCENT.  A MOTOR VEHICLE DRIVER SAW THE AIRPLANE SPINNING AS IT DISAPPEARED FROM HIS VIEW BEHIND A TREE LINE.  EXAMINATION OF THE WRECKAGE DISCLOSED NO MECHANICAL DEFECTS.  THE AIRPLANE'S LANDING GEAR AND FLAPS WERE EXTENDED AS IF FOR AN APPROACH.  THE CFII WAS GIVING MULTI-ENGINE INSTRUMENT INSTRUCTION TO THE COMMERCIAL PILOT IN PREPARATION FOR TESTING TO REMOVE A VFR-ONLY RESTRICTION FROM HIS MULTI-ENGINE RATING.  A MULTI-ENGINE INSTRUMENT FLIGHT CHECK WITH A DESIGNATED PILOT EXAMINER WAS TENTATIVELY SCHEDULED FOR LATE IN THE AFTERNOON, AFTER THE INSTRUCTIONAL PERIOD.

## Aircraft

- Registration: [N1328G](https://openairdocs.org/deregistered/N1328G-2017-06-14), registration cancelled 2017-06-14, S/N 310R0012, built 1974 (OpenAirDocs)
- Reported make and model: CESSNA 310R
- Registry model: [Cessna 310R](https://openairdocs.org/model/cessna-310r) (registry code 2074245) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 310R0012
- Airframe hours: 2755
- Engines: CONTINENTAL IO-520 285 horsepower reciprocating
- Damage: Destroyed
- Flight: Instructional, Part 91
- Operator: Hobbs W. Johnson
- Registered owner: Hobbs W. Johnson
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, October 20, 1991, 84 hours before
- Departed: SUW, SUPERIOR, WI
- Airport: SUW, Richard I Bong

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 58; commercial, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: right; toxicology performed; flight hours: 3,025 total, 250 in this make and model, 2,915 as pilot in command, 31 in the last 90 days, 11 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Lowest ceiling: none

## 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 19920311005839A](https://openairdocs.org/incident/19920311005839A), Mar 11, 1992: Cessna 310R, Superior, WI, Destroyed, 2 fatal. Observed spinning to ground. Dual flight for MEL IFR. Possible under hood engine out stall manuever.

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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