Airworthiness Directive · Amendment 39-14491 · Cessna Model 500, 550, S550, 560, 560XL, and 750 Airplanes
Cessna Model 500, 550, S550, 560, 560XL, and 750 Airplanes
Superseded. A later AD replaced this one: AD 2007-11-17. Comply with the one in force.
This AD applies to Cessna Model 500, 550, S550, 560, 560XL, and 750 airplanes, certificated in any category; as identified in the service bulletins in Table 1 of this AD.
| Cessna service bulletin | Revision | Date | Cessna model |
|---|---|---|---|
| SB500-26-02 | Original | April 1, 2005 | 500 airplanes. |
| SB550-26-05 | Original | April 1, 2005 | 550 airplanes. |
| SB560-26-01 | Original | April 1, 2005 | 560 airplanes. |
| SB560XL-26-02 | 1 | December 22, 2004 | 560XL airplanes. |
| SB750-26-05 | Original | November 24, 2004 | 750 airplanes. |
| SBS550-26-02 | Original | April 1, 2005 | S550 airplanes. |
The FAA is adopting a new airworthiness directive (AD) for certain Cessna Model 500, 550, S550, 560, 560XL, and 750 airplanes. This AD requires installing identification sleeves on the wires for the positive and negative terminal studs of the engine and/or auxiliary power unit (APU) fire extinguishing bottles, as applicable, and re- connecting the wires to the correct terminal studs. This AD results from a report of mis-wired fire extinguishing bottles. We are issuing this AD to ensure that the fire extinguishing bottles are activated in the event of an engine or APU fire, and that flammable fluids are not supplied during a fire, which could result in an unextinguished fire in the nacelle or APU.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 100 flight hours or 60 days after the effective date of this AD, whichever occurs first: Install identification sleeves on the wires for the positive and negative terminal studs of the applicable fire extinguishing bottles identified in paragraphs (f)(1), (f)(2), and (f)(3) of this AD; re-connect the wires to the correct studs; test the connection; and re-connect the wires again as applicable until the connection tests correctly. Do all actions in accordance with the Accomplishment Instructions of the applicable service bulletin identified in Table 1 of this AD.
(1) For Cessna Model 500, 550, S550, and 560 airplanes: The engine fire extinguishing bottles.
(2) For Cessna Model 560XL airplanes: The engine and the APU fire extinguishing bottles.
(3) For Cessna Model 750 airplanes: The APU fire extinguishing bottle.
Although the Accomplishment Instructions of the service bulletins identified in Table 1 of this AD describe procedures for submitting a maintenance transaction report to the manufacturer, this AD does not require that action.
Actions done before the effective date of this AD in accordance with the Accomplishment Instructions of Cessna Service Bulletin SB560XL-26-02, dated November 22, 2004, are acceptable for compliance with the corresponding action in this AD.
(i) After the effective date of this AD, no person may install on any airplane a fire-extinguishing bottle unless identification sleeves on the wires for the positive and negative terminal studs have been installed in accordance with paragraph (f) 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.
