Airworthiness Directive · Amendment 39-15351 · Cessna Aircraft Company Models 172R and 172S Airplanes
Cessna Aircraft Company Models 172R and 172S Airplanes
Superseded. A later AD replaced this one: AD 2012-02-02. Comply with the one in force.
This AD applies to the following airplane models and serial numbers that are certificated in any category:
| Models | Serial Nos. |
|---|---|
| 172R | 17281188 through 17281390. |
| 172S | 172S9491 through 172S10489. |
We are adopting a new airworthiness directive (AD) for certain Cessna Aircraft Company (Cessna) Models 172R and 172S airplanes. This AD requires you to inspect the fuel return line assembly for chafing; replace the fuel return line assembly if chafing is found; and inspect the clearance between the fuel return line assembly and both the right steering tube assembly and the airplane structure, adjusting as necessary. This AD results from reports of chafed fuel return line assemblies, which were caused by the fuel return line assembly rubbing against the right steering tube assembly during full rudder pedal actuation. We are issuing this AD to detect and correct chafing of the fuel return line assembly, which could result in fuel leaking under the floor and fuel vapors entering the cabin. This condition could lead to fire under the floor or in the cabin area.
To address this problem, you must do the following, unless already done:
Note: The requirements of this AD take precedence over the actions required in the service information.
| Actions | Compliance | Procedures |
|---|---|---|
| (1) Inspect the fuel return line assembly (Cessna part number (P/N) 0500118-49 or FAA-approved equivalent P/N) for chafing | Within the next 100 hours time-in-service (TIS) after March 6, 2008 (the effective date of this AD) or within the next 12 months after March 6, 2008 (the effective date of this AD), whichever occurs first | Follow Cessna Service Bulletin SB07-28-01, dated June 18, 2007. |
| (2) If chafing is found in the inspection required in paragraph (e)(1) of this AD, replace the fuel return line assembly (Cessna P/N 0500118-49 or FAA-approved equivalent P/N) | Before further flight after the inspection required in paragraph (e)(1) of this AD where evidence of chafing was found | Follow Cessna Service Bulletin SB07-28-01, dated June 18, 2007. |
| (3) Inspect for a minimum clearance of 0.5 inch between the following parts throughout the entire range of copilot rudder pedal travel and adjust the clearance as necessary: | Before further flight after: (A) The inspection required in paragraph (e)(1) of this AD if no chafing is found; or (B) The replacement required in paragraph (e)(2) of this AD. | Follow paragraph 6 of the Instructions section of Cessna Service Bulletin SB07-28-01, dated June 18, 2007. This AD requires a minimum clearance of 0.5 inch. |
| (i) The fuel return line assembly (Cessna P/N 0500118-49 or FAA-approved equivalent P/N) and the steering tube assembly (Cessna P/N MC0543022-2C); and | ||
| (ii) The fuel return line assembly (Cessna P/N 0500118-49 or FAA-approved equivalent P/N) and the airplane structure |
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.
Aircraft
