# AD 88-06-02: Electrical Power

- Type: Airworthiness directive
- Status: Current
- Products: Cessna 550 and S550
- Effective: May 10, 1988
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small/large airplane
- Amendment: 39-5900
- Registered aircraft: 594 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/4D7FD3A84E30CF77862569EC00521029.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/88-06-02

## The airworthiness directive

88-06-02 CESSNA: Amendment 39-5900. Applicable to Model 550 series airplanes, serial numbers (S/N) 550-0561, -0562, -0564, -0565, -0566, -0568, and -0569; and Model S550 series airplanes, S/N S550-0140 through -0146, -0148, and -0149; certificated in any category.

Compliance is required as indicated, unless previously accomplished.

To preclude wiring failure, which could result in smoke and/or fire in the cabin, accomplish the following:

A. For Cessna Model 550 series airplanes: Prior to next activation of the airplane's electrical power, disconnect the electrical power to the indirect lighting system, in accordance with Cessna Alert Service Letter SLA550-33-02, dated March 14, 1988. Electrical power may be reconnected to the indirect lighting system following replacement of the affected wiring harness described in, and in accordance with, Cessna Service Bulletin SB550-33-9, dated March 17, 1988, or later FAA-approved revisions.

B. For Cessna Model S550 series airplanes: Prior to next activation of the airplane's electrical power, disconnect the electrical power to the indirect lighting system, in accordance with Cessna Alert Service Letter SLAS550-33-01, dated March 14, 1988. Electrical power may be reconnected to the indirect lighting system following replacement of the affected wiring harness described in, and in accordance with, Cessna Service Bulletin, SBS550-33-5, dated March 17, 1988, or later FAA-approved revisions.

C. An alternate means of compliance which provides an acceptable level of safety may be used when approved by the Manager, Wichita Aircraft Certification Office, FAA, Central Region.

All persons affected by this directive who have not already received the appropriate service documents from the manufacturer, may obtain copies upon request to Cessna Aircraft Company, P.O. Box 7706, Wichita, Kansas 67277.

These documents may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle,Washington, or the FAA, Central Region, Wichita Aircraft Certification Office, 1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas.

This amendment 39-5900 becomes effective May 10, 1988.

It was effective earlier to all recipients of Priority Letter AD 88-06-02, issued March 16, 1988.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A22CE](https://openairdocs.org/tcds/A22CE): Textron Aviation Inc.; names 2 of 6 models: S550, 550

## 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: 594 (594 by airframe model, 0 by engine model)
- Makers: Cessna 594

Models with the most aircraft:

- [Cessna 550](https://openairdocs.org/model/cessna-550): 500 aircraft (airframe model)
- [Cessna S550](https://openairdocs.org/model/cessna-s550): 94 aircraft (airframe model)

All 3 models: https://openairdocs.org/ad/88-06-02/models.md
Every aircraft: https://openairdocs.org/ad/88-06-02/aircraft.md

Its text cites no advisory circulars or STCs.

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