# NTSB MIA88LA043: North American 500, N4111P, San Juan, PR, November 20, 1987

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: November 20, 1987, 15:00 local (19:00 UTC)
- Place: San Juan, PR
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report February 24, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 32096
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA88LA043
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/32096/pdf
- Page: https://openairdocs.org/ntsb/MIA88LA043

## Sequence of events

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

- Gear not extended, landing - flare/touchdown
  - checklist - not followed, pilot in command (cause)
  - gear extension - not performed, pilot in command (cause)
  - wheels up landing - inadvertent

## Analysis

WHILE ON A PART 135 NON-SCHEDULED DOMESTIC PASSENGER FLT IN VFR CONDITIONS, THE PLT LANDED THE ACFT GEAR UP. OPERATIONAL CHECK OF THE LANDING GEAR & WARNING HORN REVEALED NO FAILURE OR MALFUNCTION.

## Aircraft

- Registration: [N4111P](https://openairdocs.org/deregistered/N4111P-2014-10-06), registration cancelled 2014-10-06, S/N 638-4, built 1958 (OpenAirDocs)
- Reported make and model: NORTH AMERICAN 500
- Registry model: [Aero Commander 500](https://openairdocs.org/model/aero-commander-500) (registry code 0141102) (OpenAirDocs)
- Registry engine: [Lycoming 0-540 series](https://openairdocs.org/engine/lycoming-0-540-series) (registry code 41532, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 638-4
- Airframe hours: 10067
- Engines: LYCOMING O-520 250 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Registered owner: Fajardo Air Services, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, October 16, 1987, 39 hours before
- Departed: MJVQ, VIEQUES, PR
- Airport: SJU, Luiz Munoz Marin Int'L, runway 10, 8,000 × 150 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 29; commercial, airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 5,992 total, 47 in this make and model, 5,493 as pilot in command, 157 in the last 90 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 90° at 9 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 84 °F, dew point 70 °F
- Altimeter: 29.00 inHg
- Observed at: SJU

## 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 19871120081889A](https://openairdocs.org/incident/19871120081889A), Nov 20, 1987: Gulstm 500RKWELL, San Juan, Puerto Rico, Substantial damage. Pilot stated the gear collapsed on touchdown. Investigation showed that the pilot landed with gear up.

## Other investigations on N4111P (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 LAX80FVM03](https://openairdocs.org/ntsb/LAX80FVM03), Oct 17, 1979: Aero Comdr 500 (N4111P), San Francisco, CA, incident, minor 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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