# NTSB ANC88LA116: Artic S-1B2, N55AD, Hartman River, AK, August 24, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 23, 1988, 17:30 local (Aug 24, 1988, 01:30 UTC)
- Place: Hartman River, AK
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report October 2, 1989
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5057
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC88LA116
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5057/pdf
- Page: https://openairdocs.org/ntsb/ANC88LA116

## Sequence of events

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

- Miscellaneous/other, takeoff
  - airspeed(vxse) - not maintained, pilot in command (cause)
- Hard landing, landing - flare/touchdown
  - precautionary landing - attempted, pilot in command
- Gear collapsed, landing
  - landing gear - overload

## Analysis

THE PILOT HAD JUST TAKEN OFF FROM A SAND BAR. DURING CLIMB-OUT ON THE DOWNWIND LEG, HE FELT THE ENGINE WAS NOT PRODUCING THE PROPER POWER BECAUSE THE AIRSPEED WAS DROPPING AND THE CLIMB HAD STOPPED. HE MADE A LEFT TURN AND CRASH LANDED ON THE SAND BAR TO AVOID A FULL STALL. NO MECHANICAL PROBLEM WAS FOUND WITH THE AIRPLANE.

## Aircraft

- Registration: [N55AD](https://openairdocs.org/aircraft/N55AD), registered now, S/N 1006, built 1977 (OpenAirDocs)
- Reported make and model: Artic Aircraft Corp. S-1B2
- Registry model: [Arctic S-1B2](https://openairdocs.org/model/arctic-s-1b2) (registry code 0790208) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1006
- Airframe hours: 225
- Engines: LYCOMING O-320-A2B 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Mangiardi, Eugene J.
- Registered owner: Eugene J. Mangiardi
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 29, 1988, 20 hours before
- Destination: ANCHORAGE, AK

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 45; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: front; flight hours: 260 total, 35 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 0° at 5 knots
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 55 °F

## 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 19880823037769A](https://openairdocs.org/incident/19880823037769A), Aug 23, 1988: Arctic S1B2, Hartman River, AK, Substantial damage. Stalled aircraft during a climbing turnout after takeoff.

## Other investigations on N55AD (2)

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 ANC04LA045](https://openairdocs.org/ntsb/ANC04LA045), Apr 23, 2004: Arctic S-1B2 (N55AD), Big Lake, AK, substantial damage. Probable cause: The flight instructor's failure to insure that the carburetor heat was activated by the dual student following a simulated loss of engine power, which resulted in carburetor ice and the actual loss…
- [NTSB ANC90LA080](https://openairdocs.org/ntsb/ANC90LA080), May 26, 1990: Interstate S1B1 (N55AD), Beluga River, AK, substantial damage. Probable cause: THE PILOT SELECTED UNSUITABLE TERRAIN. CONTRIBUTING FACTORS WERE THE SOFT TERRAIN AND THE PILOT'S LACK OF EXPERIENCE IN OFF-AIRPORT OPERATIONS.

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.