Airworthiness Directive · Amendment 39-18535 · Engine controls
Airbus Defense and Space S.A. (Formerly Known as Construcciones Aeronauticas, S.A.)
This AD applies to Airbus Defense and Space S.A. (formerly known as Construcciones Aeronauticas, S.A.) Model CN-235 airplanes, serial numbers C-001 through C-015 inclusive; and Model CN-235-100 and -200 airplanes, serial numbers C-016 through C-073 inclusive; certificated in any category.
We are superseding Airworthiness Directive (AD) 2001-12- 18 for certain CASA Model CN-235 series airplanes. AD 2001-12-18 required modification of the rigging of the engine control cable assembly and replacement of either the entire engine control cable assembly or a segment of the control cables. This new AD would retain the requirements of AD 2001-12-18. This new AD also requires repetitive replacements of each power lever and condition lever Teleflex cable with a new or serviceable part, and removes airplanes from the applicability. This AD was prompted by reports of new occurrences of cable disruption on a certain part number; the disruption is caused by microcracks along the cable surface. We are issuing this AD to prevent fatigue of the engine control cables, leading to breakage of the cables, which could result in reduced controllability of the airplane.
This paragraph restates the requirements of paragraph (a) of AD 2001-12-18. Within 15 days after July 25, 2001 (the effective date of AD 2001-12-18): Rig the power lever and condition lever control stops, in accordance with CASA COM 235-140, Revision 01, dated March 21, 2000.
At the applicable compliance times specified in table 1 to paragraph (h) of this AD: Replace each power lever and condition lever Teleflex cable having part number (P/N) 72830-20 with a new or serviceable part, in accordance with Airbus Military Alert Operators Transmission AOT-CN235-76-0001, dated May 27, 2014. Repeat the replacement thereafter at intervals not to exceed an accumulation of 5,000 total flight cycles on each Teleflex cable having P/N 72830-20.
| Total flight cycles accumulated on the Teleflex cable having P/N 72830-20 (since first installation on an airplane) as of the effective date of this AD | Compliance time |
|---|---|
| Fewer than 4,700 total flight cycles | Before accumulating 5,000 total flight cycles. |
| Equal to or more than 4,700 total flight cycles, but fewer than 6,000 total flight cycles | Within 300 flight cycles or 12 months after the effective date of this AD, whichever occurs first. |
| Equal to or more than 6,000 total flight cycles, but fewer than 7,000 total flight cycles | Within 200 flight cycles or 6 months after the effective date of this AD, whichever occurs first. |
| Equal to or more than 7,000 total flight cycles | Within 100 flight cycles or 3 months after the effective date of this AD, whichever occurs first. |
As of the effective date of this AD, no person may install, on any airplane, a Teleflex cable having P/N 72830-20, unless the cable has accumulated fewer than 5,000 total flight cycles since its first installation on an airplane.
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.
Appliances and equipment
