# NTSB CHI84LA092: Beech B-19, N173S, Crystal Lake, IL, January 22, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: January 22, 1984, 13:10 local (19:10 UTC)
- Place: Crystal Lake, IL
- Coordinates: 42.229953, -88.330474 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.2300&lon=-88.3305&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12533
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI84LA092
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12533/pdf
- Page: https://openairdocs.org/ntsb/CHI84LA092

## Sequence of events

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

- In flight collision with object, approach - vfr pattern - final approach
  - terrain condition - snowbank
  - proper glidepath - not maintained, pilot in command (cause)
  - supervision - inadequate, pilot in command(cfi) (cause)
- Main gear collapsed, landing - roll

## Analysis

THE ACFT HIT A SNOW BANK DURING AN APPROACH FOR LANDING. THE PLT ADDED POWER AND MADE A GO-AROUND. THE CFI TOOK CONTROL OF THE ACFT AND MADE THE FINAL LANDING WHEN THE MAIN LANDING GEAR COLLAPSED.

## Aircraft

- Registration: N173S (not matched to a registry record)
- Reported make and model: Beech B-19
- Category: Airplane
- Serial number: MB-788
- Engines: LYCOMING O-320-E3D 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Registered owner: Robert W. Scobell
- Airworthiness certificate: Standard, Aerobatic
- Airport: 3CK, Lake In The Hills, runway 26, 3,000 × 50 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 23; flight instructor, commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: right; flight hours: 766 total, 2 in this make and model, 652 as pilot in command, 50 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 190° at 13 knots
- Visibility: 10 statute miles
- Lowest ceiling: 22,000 ft broken
- Temperature: 23 °F, dew point 10 °F
- Altimeter: 30.00 inHg
- Observed at: ORD, 22 nm away

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.