# NTSB CHI82FA025: Piper 23-250, N6995Y, Wheeling, IL, January 10, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: January 10, 1982, 13:46 local (19:46 UTC)
- Place: Wheeling, IL
- Coordinates: 42.130031, -87.920623 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.1300&lon=-87.9206&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report January 10, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 73029
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI82FA025
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/73029/pdf
- Page: https://openairdocs.org/ntsb/CHI82FA025

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, takeoff - initial climb
  - engine assembly,connecting rod - separation (cause)
  - fluid,oil grade - improper (cause)
  - maintenance,lubrication - not corrected, pilot in command (cause)
- On ground/water collision with object, landing - roll
  - object - aircraft parked/standing (contributing factor)
  - directional control - not maintained, pilot in command (cause)

## Analysis

SHORTLY AFTER TAKEOFF THE PILOT NOTICED A LOSS OF OIL PRESSURE ON BOTH ENGINES AND INITIATED A LEFT TURN BACK TO THE AIRPORT. DURING LANDING THE AIRCRAFT DEPARTED THE RIGHT SIDE OF RUNWAY 12, COLLIDED WITH, AND SUBSTANTIALLY DAMAGED TWO CESSNA 150'S AND DESTROYED A PIPER PA-32. BOTH ENGINES HAD 9X5 INCH HOLES ON THE TOP OF THE CRANKCASES AND BOTH HAD TWO CONNECTING RODS THAT HAD SEPARATED. THE ENGINE LOGBOOKS REVEALED THAT THE OIL HAD BEEN CHANGED ON 10/16/81 WITH THE EQUIVALENT OF SAE 40 OIL. THE LYCOMING OPERATOR'S MANUAL, WHICH WAS WITH THE AIRCRAFT RECORDS, RECOMMENDS THAT SAE 20 OIL BE USED FOR OPERATION AT TEMPERATURES BELOW 10 DEGREES F. THE TEMPERATURE AT THE TIME OF THE ACCIDENT WAS -15 DEGREES F.

## Aircraft

- Registration: [N6995Y](https://openairdocs.org/deregistered/N6995Y-2013-07-02), registration cancelled 2013-07-02, S/N 27-4366, built 1969 (OpenAirDocs)
- Reported make and model: PIPER 23-250
- Registry model: [Piper PA-23-250](https://openairdocs.org/model/piper-pa-23-250) (registry code 7102308) (OpenAirDocs)
- Registry engine: [Lycoming TI0-540 series](https://openairdocs.org/engine/lycoming-ti0-540-series) (registry code 41533, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: 27-4366
- Airframe hours: 5350
- Engines: LYCOMING IO-540-C4B5 250 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Operator: Daniel A Bitton
- Registered owner: Aztec Parnership
- Departed: PWK, WHEELING, IL
- Destination: MADISON, WI
- Airport: PWK, Palwaukee, runway 12, 4,450 × 50 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 28; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; flight hours: 1,640 total, 382 in this make and model, 1,590 as pilot in command, 52 in the last 90 days

## Weather

- Conditions: Instrument (IMC), Day
- Wind: 270° at 20 knots
- Visibility: 3 statute miles
- Temperature: 5 °F
- Altimeter: 30.00 inHg
- Observed at: PWK

## 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 19820110000709A](https://openairdocs.org/incident/19820110000709A), Jan 10, 1982: Piper PA23250, Wheeling, WI, Destroyed. Lost both engines after takeoff. Hit parked aircraft on forced landing. Improper oil weight, for minus 15 degrees.

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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