# N4031S: Adams Balloon A55

- Status: Valid registration
- Airframe: [Adams Balloon A55](https://openairdocs.org/model/adams-balloon-a55) (registry code 0050103)
- Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000)
- Data sheets: [TCDS A15SO](https://openairdocs.org/tcds/A15SO) (Adams Aerostats LLC) (OpenAirDocs)
- Serial number: 159
- Type: Balloon
- Engine type: None
- Airworthiness: Standard, balloon
- Airworthiness date: August 30, 1985
- Certificate issued: December 9, 2022
- Expires: December 31, 2029
- Mode S code: A4BA52
- Registered owner: [Vertical Concepts Inc](https://openairdocs.org/faa-owner/VERTICAL%20CONCEPTS%20INC)
- Location: [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)
- Owner type: Corporation
- Owner's area on the map: 39.7376° N, 75.6671° W: Placed by OpenAirDocs at the center of ZIP code 19808, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=4031S
- Page: https://openairdocs.org/aircraft/N4031S

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.

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

### Matched by airframe (Adams Balloon A55)

- [AD 2013-03-10](https://openairdocs.org/ad/2013-03-10): Hardware · Aeronaut Instruction Research Skysailor 105, Skysailor 90, 110C and 439 more. Effective Mar 19, 2013
- [AD 75-12-08](https://openairdocs.org/ad/75-12-08): Throttle or Trigger Valves · McGrath, Michael D. A-60S, A-B, A50S and 41 more. Effective Apr 30, 1976

### Matched by engine (NONE)

None in force.

## Information bulletins (advisory) (1 in force)

- [SAIB CE-11-44](https://openairdocs.org/saib/CE-11-44): Fuel: Cylinder Strap Installation. Issued Jul 13, 2011

## NTSB investigations

None matched to N4031S.

## FAA accident and incident reports

None matched to N4031S.

## 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) (4)

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 (Adams Balloon A55)

- [STC SB09657RC](https://openairdocs.org/stc/SB09657RC): Installation of Aircraft Position Lights. Albuquerque Balloon Center, Inc
- [STC SB02133LA](https://openairdocs.org/stc/SB02133LA): Installation of the Head Balloons model AX8-88b and Head DBII Burner. Aeronautical Enterprises Inc
- [STC SB02085CH](https://openairdocs.org/stc/SB02085CH): Descriptive data pertaining to this design change are considered inadequate for duplication in other products. This approval is limited to only the installation made in Adams Balloon Loft Model A55, Serial No. 177. Bernava Emelia
- [STC SB02889AT](https://openairdocs.org/stc/SB02889AT): Installation of replacement vapor and liquid fuel hoses including associated fittings. Aeronautical Enterprises Inc

## Earlier aircraft with N4031S

The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N4031S before.

- [Cancelled 1981-06-29](https://openairdocs.org/deregistered/N4031S-1981-06-29): Hiller UH-12E, S/N 5171, built 1981. Exported to Argentina. Owner: [Hiller Aviation](https://openairdocs.org/faa-owner/HILLER%20AVIATION), [Porterville, CA](https://openairdocs.org/faa-place/CA/Porterville)
- [Cancelled 1973-11-23](https://openairdocs.org/deregistered/N4031S-1973-11-23): Sikorsky S-61D, S/N 61706, built 1973. Exported to Brazil. Owner: [Sikorsky Aircraft Division](https://openairdocs.org/faa-owner/SIKORSKY%20AIRCRAFT%20DIVISION), [Stratford, CT](https://openairdocs.org/faa-place/CT/Stratford)

## Related

- Other Adams Balloon A55 aircraft: https://openairdocs.org/model/adams-balloon-a55/aircraft.md
- The NONE engine: https://openairdocs.org/engine/none.md

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