Airworthiness Directive · Amendment 39-14232 · The Cessna Aircraft Company Models 525, 525A, and 525B Airplanes
The Cessna Aircraft Company Models 525, 525A, and 525B Airplanes
This AD affects the following airplane models and serial numbers that are certificated in any category:
| Model | Serial Nos. |
|---|---|
| 525 | 525-0001 through 525-0600. |
| 525A | 525A-0001 through 525A-0234. |
| 525B | 525B-0001 through 525B-0035. |
The FAA adopts a new airworthiness directive (AD) for certain The Cessna Aircraft Company (Cessna) Models 525, 525A, and 525B airplanes. This AD requires you to install identification sleeves on the wiring for both engine fire extinguisher bottles. This AD results from reports of incorrectly connecting wires to the engine fire extinguisher bottles. We are issuing this AD to prevent incorrect installation of the wires to the engine fire extinguisher bottles, which could result in failure of the engine fire extinguisher bottles to discharge when activated. This failure could lead to the inability to control an engine fire.
To address this problem, you must do the following:
| Actions | Compliance | Procedures |
|---|---|---|
| (1) Install identification sleeves on the wires for both engine fire extinguisher bottles | Within the next 60 days or 100 hours time-in-service after October 7, 2005 (the effective date of this AD), whichever occurs first | Follow the Accomplishment Instructions in: (i) Cessna Citation Service Bulletin SB525-26-01; (ii) Cessna Citation Service Bulletin SB525A-26-02; or (iii) Cessna Citation Service Bulletin SB525B-26-01, all dated April 5, 2005, as applicable. |
| (2) Reconnect the wires to both engine fire extinguisher bottles | Before further flight after the sleeve installation required in paragraph (e)(1) of this AD | Use the service information specified in paragraphs (e)(1)(i) through (e)(1)(iii) of this AD. |
| (3) Test the wires for correct installation | Before further flight after reconnecting the wires as required in paragraph (e)(2) of this AD | Use the service information specified in paragraphs (e)(1)(i) through (e)(1)(iii) of this AD. |
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
