# N137U: Dee Howard 500

- Status: Valid registration
- Airframe: [Dee Howard 500](https://openairdocs.org/model/dee-howard-500) (registry code 4390102, 21 seats)
- Engine: [Pratt & Whitney R-2800 series](https://openairdocs.org/engine/pratt-whitney-r-2800-series) (registry code 52026)
- Data sheets: [TCDS A1SW](https://openairdocs.org/tcds/A1SW) (The Dee Howard Company) (OpenAirDocs)
- Serial number: 500-109
- Type: Fixed wing multi engine
- Engine type: Reciprocating
- Airworthiness: Standard, transport
- Airworthiness date: December 4, 1963
- Certificate issued: March 21, 2026
- Expires: March 31, 2033
- Mode S code: A096F4
- Registered owner: [Freeman Jet LLC](https://openairdocs.org/faa-owner/FREEMAN%20JET%20LLC)
- Location: [Cape Coral, FL](https://openairdocs.org/faa-place/FL/Cape%20Coral)
- Owner type: LLC
- Owner's area on the map: 26.5594° N, 82.0242° W: Placed by OpenAirDocs at the center of ZIP code 33914, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=137U
- Page: https://openairdocs.org/aircraft/N137U

From the FAA registry file of October 24, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. The registry lists only the engine series, so ADs for every Pratt & Whitney R-2800 model are included.

## ADs that may apply (OpenAirDocs): 2 in force

### Matched by airframe (Dee Howard 500)

- [AD 67-03-04](https://openairdocs.org/ad/67-03-04): Flap Cable Support Clamps · Air Trading Navy PV-1 and 500. Effective Jan 25, 1967
- [AD 67-03-03](https://openairdocs.org/ad/67-03-03): Elevator Torque Tube Collars · Air Trading Navy PV-1 and 500. Effective Jan 23, 1967

### Matched by engine (Pratt & Whitney R-2800 series)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N137U.

## FAA accident and incident reports

None matched to N137U.

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## STCs that may be installed (OpenAirDocs) (11)

Approved for this aircraft's airframe or engine model, in force first, then newest. The registry doesn't record which STCs an aircraft has; its records do.

### Approved for the airframe (Dee Howard 500)

- [STC SA02511SE](https://openairdocs.org/stc/SA02511SE): Installation of replacement fuel quantity indicator sending unit(s). CiES Inc
- [STC SA451CE](https://openairdocs.org/stc/SA451CE): Install Hoskins Twilighter MK III Supplementary lighting system with Model E, F or P wing tip and Model C tail lights. BF Goodrich Aerospace
- [STC SA98CE](https://openairdocs.org/stc/SA98CE): Installation of Hoskins Supplemental Model A, B, E high intensity wing tip lights, Model C tail light, with or without Model 2 high intensity fuselage light. BF Goodrich Aerospace
- [STC SA1969SW](https://openairdocs.org/stc/SA1969SW): Installation of tail wheel tire 6.00 X 6, 8 PR, Type III and wheel. Sierra Industries, Inc
- [STC SA546SW](https://openairdocs.org/stc/SA546SW): Installation of double action main landing gear doors. Sierra Industries, Inc
- [STC SA686SW](https://openairdocs.org/stc/SA686SW): Installation of Pratt & Whitney R2800-CB16 engine power ratings with 100/130 grade fuel and cabin compressor automatic disconnect. Sierra Industries, Inc
- [STC SA738SW](https://openairdocs.org/stc/SA738SW): Installation of elevator torque tube flange. Sierra Industries, Inc
- [STC SA743SW](https://openairdocs.org/stc/SA743SW): Clamp, flap actuating cylinder H500 P/N 5-104268-1. Sierra Industries, Inc
- [STC SA760SW](https://openairdocs.org/stc/SA760SW): Installation of flap actuating cylinder attach bracket. Sierra Industries, Inc
- [STC SA723SW](https://openairdocs.org/stc/SA723SW): F1002 windshield temperature control system. Flores M R
- [STC SA451SW](https://openairdocs.org/stc/SA451SW): Installation of exhaust system. Howard Research & Development Co

## Related

- Other Dee Howard 500 aircraft: https://openairdocs.org/model/dee-howard-500/aircraft.md
- The Pratt & Whitney R-2800 series engine: https://openairdocs.org/engine/pratt-whitney-r-2800-series.md

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