# AD 86-11-07: STC SA2353NM - Voltage Regulator and Electrical System

- Type: Airworthiness directive
- Status: Current
- Products: Cessna TU206G and U206G with STC SA2353NM
- Effective: July 4, 1986
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-5324
- Registered aircraft: 554 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/05E4A3FD23E1B59E862569BA004BE4B0.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/86-11-07

## The airworthiness directive

86-11-07 CESSNA: Amendment 39-5324. Applies to the following Model U2O6G and TU206G airplanes modified with Soloy Turbine Pac installations in accordance with Supplemental Type Certificate (STC) number SA2353NM:

CESSNA SERIAL NUMBER SOLOY DATA PLATE NUMBER U20603989 763-013 U20604266 763-001 U20604287 763-003 U20604881 763-014 U20605232 763-005 U20605567 763-002 U20605584 763-015 U20605745 763-008 U20605936 763-006 U20606065 763-007 U20606227 763-004 U20606381 763-011 U20606628 763-010 U20606768 763-012 U20606816 763-009

Compliance: Required as indicated in the body of the AD unless previously accomplished.

To preclude loss of the in-flight engine restart capability and to correct a condition that could cause erroneous navigation displays to the pilot, accomplish the following:

  (a) For the above listed airplanes modified by Soloy STC SA2353NM, within the next 100 hours time-in-service (TIS) after the effective dateof this AD, remove and replace the voltage regulator in accordance with the instructions contained in Soloy Service Bulletin (S/B) 04-763 dated March 29, 1985.

  (b) For serial numbered airplanes U20604266, U20604287, U20605232, U20605567, U20605745, U20605936, U20606065, and U20606227 modified with Soloy STC SA2353NM, within the next 200 hours TIS after the effective date of this AD, modify the electrical system circuit breaker installation in accordance with the instructions contained in Soloy S/B No. 02-763 dated January 7, 1985.

  (c) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished.

  (d) An equivalent method of compliance with this AD may be used if approved by the Manager, Seattle Aircraft Certification Office, Federal Aviation Administration, Northwest Mountain Region, 17900 Pacific Highway South, C-68966, Seattle, Washington 98168.

All persons affected by this directive may obtain copies of the document referredto herein upon request to Soloy Conversions, LTD., 450 Pat Kennedy Way, S.W., Olympia, Washington 98502 or FAA, Office of the Regional Counsel, Room 1558, 601 East 12th Street, Kansas City, Missouri 64106.

This amendment becomes effective on July 4, 1986.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A4CE](https://openairdocs.org/tcds/A4CE): Textron Aviation Inc.; names 2 of 29 models: TU206G, U206G

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 554 (554 by airframe model, 0 by engine model)
- Makers: Cessna 554

Models with the most aircraft:

- [Cessna U206G](https://openairdocs.org/model/cessna-u206g): 347 aircraft (airframe model)
- [Cessna TU206G](https://openairdocs.org/model/cessna-tu206g): 207 aircraft (airframe model)

All 3 models: https://openairdocs.org/ad/86-11-07/models.md
Every aircraft: https://openairdocs.org/ad/86-11-07/aircraft.md

## Related documents

- [STC SA2353NM](https://openairdocs.org/stc/SA2353NM): Installation of the Soloy Turbine Pac (Rolls-Royce 250-C20S engine modified per Soloy, LLC STC SE2352NM) and related changes.. DV Aviation Inc., Named in the applicability

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