# NTSB ANC87LA088: Piper PA-18-180, N4408Z, Pingo Ridge, AK, July 2, 1987

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 2, 1987, 09:00 local (17:00 UTC)
- Place: Pingo Ridge, AK
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report May 9, 1988
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4864
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC87LA088
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4864/pdf
- Page: https://openairdocs.org/ntsb/ANC87LA088

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - terrain condition - loose gravel/sandy (contributing factor)
  - aircraft handling - not maintained, pilot in command (cause)
  - terrain condition - rough/uneven (contributing factor)
  - directional control - not maintained, pilot in command (cause)
  - touchdown - improper, pilot in command (cause)
  - abort - intentional, pilot in command (cause)
- Nose over, landing - roll

## Analysis

THE PILOT STATED THAT AFTER TOUCHDOWN HE LOST CONTROL OF THE AIRCRAFT CAUSING THE AIRCRAFT TO NOSE OVER ON ITS BACK.

## Aircraft

- Registration: [N4408Z](https://openairdocs.org/aircraft/N4408Z), registered now, S/N 18-8741 (OpenAirDocs)
- Reported make and model: PIPER PA-18-180
- Registry model: [Piper PA-18-150](https://openairdocs.org/model/piper-pa-18-150) (registry code 7101828) (OpenAirDocs)
- Category: Airplane
- Serial number: 188741
- Airframe hours: 4255
- Engines: LYCOMING O-320 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Charles Warbelow
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, November 16, 1986, 34 hours before
- Flight plan: VFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 34; airline transport; airplane ratings: multi-engine land, single-engine sea, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: front; flight hours: 9,600 total, 1,800 in this make and model, 9,400 as pilot in command, 150 in the last 90 days, 75 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 5 knots
- Visibility: 30 statute miles
- Lowest ceiling: 5,000 ft overcast
- Temperature: 50 °F, dew point 39 °F
- Altimeter: 29.00 inHg

## 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 19870702032159A](https://openairdocs.org/incident/19870702032159A), Jul 2, 1987: Piper PA18150, Pingo Ridge, AK, Substantial damage. The pilot lost aircraft control on landing. The aircraft nosed over.

## Other investigations on N4408Z (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 ANC74DAA25](https://openairdocs.org/ntsb/ANC74DAA25), Mar 3, 1974: Piper PA-18 (N4408Z), Shungnak, AK, substantial damage

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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