Airworthiness Directive · Amendment 39-14805 · Air Tractor, Inc. Models AT-602, AT-802, and AT-802A Airplanes
Air Tractor, Inc. Models AT-602, AT-802, and AT-802A Airplanes
Superseded. A later AD replaced this one: AD 2007-13-17. Comply with the one in force.
This AD affects all Models AT-602, AT-802, and AT-802A airplanes, all serial numbers, that are certificated in any category.
The FAA adopts a new airworthiness directive (AD) for all Air Tractor, Inc. Models AT-602, AT-802, and AT-802A airplanes. This AD requires you to repetitively inspect the engine mount for any cracks, repair or replace any cracked engine mount, and report any cracks found to the FAA. This AD results from reports of cracked engine mounts. We are issuing this AD to detect and correct cracks in the engine mount, which could result in failure of the engine mount. Such failure could lead to separation of the engine from the airplane.
To address this problem, you must do the following:
| Actions | Compliance | Procedures |
|---|---|---|
| (1) Visually inspect the engine mount for any cracks | Initially inspect upon accumulating 4,000 hours time-in-service (TIS) or within the next 100 hours TIS after December 1, 2006 (the effective date of this AD), whichever occurs later, unless already done. Thereafter, repetitively inspect every 300 hours TIS | Follow Snow Engineering Co. Service Letter #253, dated December 12, 2005. |
| (2) If you find any crack damage, do one of the following: (i) Obtain an FAA-approved repair scheme and incorporate this repair scheme; or (ii) Replace the engine mount with a new engine mount. | Before further flight after any inspection required by paragraph (e)(1) of this AD where crack damage is found. If you repair the cracked engine mount, then continue to reinspect at intervals not to exceed 300 hours TIS, unless the repair scheme states differently. If you replace the engine mount, then initially inspect upon accumulating 4,000 hours TIS and repetitively at intervals not to exceed 300 hours TIS thereafter | For obtaining a repair scheme: Follow Snow Engineering Co. Service Letter #253, dated December 12, 2005. For the replacement: The maintenance manual includes instructions for the replacement. |
| (3) Report any cracks that you find to the FAA at the address specified in paragraph (f) of this AD. Include in your report: (i) Airplane serial number; (ii) Airplane and engine mount hours TIS; (iii) Crack location(s) and size(s); (iv) Corrective action taken; and (v) Point of contact name and telephone number. | Within the next 10 days after you find the cracks or within the next 10 days after December 1, 2006 (the effective date of this AD), whichever occurs later | The Office of Management and Budget (OMB) approved the information collection requirements contained in this regulation under the provisions of the Paperwork Reduction Act and assigned OMB Control Number 2120-0056. |
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.
