# AD 72-16-06: Electrical Feeder Wire Gage

- Type: Airworthiness directive
- Status: Current
- Products: Sikorsky S-61A, S-61L, S-61N and S-61R
- Effective: August 10, 1972
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Amendment: 39-1496
- Registered aircraft: 53 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0A7DA1C2BA28712586256A55007042AC.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/72-16-06

## The airworthiness directive

72-16-06 SIKORSKY: Amendment 39-1496. Applies to all S61A, S61L, S61N and S61R type helicopters.

Compliance required as indicated after the effective date of this Airworthiness Directive.

To assure the proper electrical feeder wiring gage in the A.C. circuit breaker panel, accomplish the following:

1. Within the next 25 hours time in service from the effective date of the Airworthiness Directive comply with Sikorsky Service Bulletin 61B55-27A, Paragraph 2A or later revision approved by the Chief, Engineering and Manufacturing Branch, FAA, New England Region.

2. Within 250 hours time in service from the effective date of this Airworthiness Directive.

  (a) Conduct a conformity inspection in accordance with the aircraft drawing effectivity list shown in Sikorsky Service Bulletin 61B55-27A, Paragraph 2.B(5) or later revision approved by the Chief, Engineering and Manufacturing Branch, FAA, New England Region.

  (b) Conduct an inspection of all alterations performed on, or affecting the A.C. circuit breaker panel and substantiate feeder wire sizes affected are adequate for the alterations performed. Changes required as a result of this Airworthiness Directive must be approved by the Chief, Engineering and Manufacturing Branch, FAA, New England Region. (Ref. Sikorsky S.B. 61B55-27A dated 9 May 1972 for list of Sikorsky Service Bulletins which modified drawings all listed in Paragraph 2.B(5)).

Upon request with substantiating data submitted through an FAA maintenance inspector, the Compliance times specified in this Airworthiness Directive may be increased by the Chief, Engineering and Manufacturing Branch, FAA, New England Region.

This amendment is effective 10 August 1972.

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 1H15](https://openairdocs.org/tcds/1H15): Sikorsky Aircraft; names 3 of 4 models: S-61R, S-61N, S-61L
- [TCDS H2EA](https://openairdocs.org/tcds/H2EA): Sikorsky Aircraft Corporation; names 1 of 4 models: S-61A

## 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: 53 (53 by airframe model, 0 by engine model)
- Makers: Sikorsky 52, Carson Helicopters / Sikorsky 1

Models with the most aircraft:

- [Sikorsky S-61N](https://openairdocs.org/model/sikorsky-s-61n): 45 aircraft (airframe model)
- [Sikorsky S-61A](https://openairdocs.org/model/sikorsky-s-61a): 5 aircraft (airframe model)
- [Sikorsky S-61L](https://openairdocs.org/model/sikorsky-s-61l): 1 aircraft (airframe model)
- [Sikorsky S-61R](https://openairdocs.org/model/sikorsky-s-61r): 1 aircraft (airframe model)
- [Carson Helicopters / Sikorsky S61A](https://openairdocs.org/model/carson-helicopters-sikorsky-s61a): 1 aircraft (airframe model)

All 5 models: https://openairdocs.org/ad/72-16-06/models.md
Every aircraft: https://openairdocs.org/ad/72-16-06/aircraft.md

Its text cites no advisory circulars or STCs.

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