# N88SD: Bell Helicopter HH-1N

- Status: Valid registration
- Airframe: [Bell Helicopter HH-1N](https://openairdocs.org/model/bell-helicopter-hh-1n) (registry code 1180608, 4 seats)
- Serial number: 158762
- Type: Rotorcraft
- Engine type: Turbo-shaft
- Certificate issued: September 30, 2022
- Expires: September 30, 2029
- Mode S code: AC1D10
- Registered owner: [City Of Chicago Department Of Police](https://openairdocs.org/faa-owner/CITY%20OF%20CHICAGO%20DEPARTMENT%20OF%20POLICE)
- Location: [Chicago, IL](https://openairdocs.org/faa-place/IL/Chicago)
- Owner type: Government
- Owner's area on the map: 41.7144° N, 87.5551° W: Placed by OpenAirDocs at the center of ZIP code 60617, 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=88SD
- Page: https://openairdocs.org/aircraft/N88SD

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): 0 in force

### Matched by airframe (Bell Helicopter HH-1N)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N88SD.

## FAA accident and incident reports

None matched to N88SD.

## 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)

None matched to this aircraft's models.

## Related

- Other Bell Helicopter HH-1N aircraft: https://openairdocs.org/model/bell-helicopter-hh-1n/aircraft.md

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