# N858GE: 2020 Sikorsky S-70M

- Status: Valid registration
- Airframe: [Sikorsky S-70M](https://openairdocs.org/model/sikorsky-s-70m) (registry code 8142999, 20 seats)
- Engine: [GE T700-GE-701D](https://openairdocs.org/engine/ge-t700-ge-701d) (registry code 30155)
- Data sheets: [TCDS H5NE](https://openairdocs.org/tcds/H5NE) (Sikorsky Aircraft Corporation) (OpenAirDocs)
- Serial number: 704091
- Year built: 2020
- Type: Rotorcraft
- Engine type: Turbo-shaft
- Airworthiness: Experimental, research and development, showing compliance
- Airworthiness date: November 19, 2025
- Certificate issued: February 15, 2026
- Expires: February 28, 2033
- Mode S code: ABC5AB
- Registered owner: [County Of San Diego](https://openairdocs.org/faa-owner/COUNTY%20OF%20SAN%20DIEGO)
- Location: [San Diego, CA](https://openairdocs.org/faa-place/CA/San%20Diego)
- Owner type: Government
- Owner's area on the map: 32.8096° N, 117.1342° W: Placed by OpenAirDocs at the center of ZIP code 92123, 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=858GE
- Page: https://openairdocs.org/aircraft/N858GE

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): 1 in force

### Matched by airframe (Sikorsky S-70M)

- [AD 2023-11-07](https://openairdocs.org/ad/2023-11-07): Ground Proximity System · Airbus Helicopters 47, 206, 210 and 237 more. Effective Jun 22, 2023

### Matched by engine (GE T700-GE-701D)

None in force.

### Historical (superseded or no longer in force)

- [AD 2024-05-51](https://openairdocs.org/ad/2024-05-51) (historical): Turbine Section · General Electric CT7-2E1, CT7-2F1, CT7-8A and 11 more. Effective Apr 1, 2024
- [AD 2021-23-13](https://openairdocs.org/ad/2021-23-13) (historical): Ground Proximity System · Airbus Helicopters K-225, K-190A, K-240 and 237 more. Effective Dec 9, 2021

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N858GE.

## FAA accident and incident reports

None matched to N858GE.

## 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) (6)

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 (Sikorsky S-70M)

- [STC SR02753LA](https://openairdocs.org/stc/SR02753LA): Installation of an engine Inlet Barrier Filter (IBF). Aerometals Inc
- [STC SR02597SE](https://openairdocs.org/stc/SR02597SE): Installation of Purge Fuel Collector System. Timberline Aerospace LLC
- [STC SR12058AK](https://openairdocs.org/stc/SR12058AK): Installation of Recoil Aerospace, Inc. T750-I Internal Fire Suppression Tank. Recoil Aerospace Inc
- [STC SR04461CH](https://openairdocs.org/stc/SR04461CH): Installation of a Helitak FT4500 Black Hawk Fire Tank Liquid Dispensing System. Helitak USA, LLC
- [STC SR00848DE](https://openairdocs.org/stc/SR00848DE): The installation of a bubble window as a direct replacement for the existing window in the left hand side Cockpit door. Blackhawk Mission Equipment
- [STC SR00896DE](https://openairdocs.org/stc/SR00896DE) (historical): The installation of a bubble window with view port as a direct replacement for the existing window in the left hand side Cockpit door. Blackhawk Mission Equipment

## Related

- Other Sikorsky S-70M aircraft: https://openairdocs.org/model/sikorsky-s-70m/aircraft.md
- The GE T700-GE-701D engine: https://openairdocs.org/engine/ge-t700-ge-701d.md

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