Airworthiness Directive · Amendment 39-11874 · Fairchild Aircraft, Inc. Models SA226-T, SA226-AT, SA226-T(B), SA226-TC, SA227-AT, SA-227-TT, and SA-227-AC Airplanes
Fairchild Aircraft, Inc. Models SA226-T, SA226-AT, SA226-T(B), SA226-TC, SA227-AT, SA-227-TT, and SA-227-AC Airplanes
The following airplane models and serial numbers, certificated in any category.
| Model | Serial numbers |
|---|---|
| SA226-T | T201 through T275, and T277 thru T291. |
| SA226-T(B) | T(B) 276 and T(B) 292 through T(B) 417. |
| SA226-AT | AT001 through AT074. |
| SA226-TC | TC201 through TC419. |
| SA227-TT | TT421 through TT555. |
| SA227-AT | AT423 through AT599. |
| SA227-AC | AC406, AC415, AC416, and AC420 through AC599. |
This amendment supersedes Airworthiness Directive (AD) 92-01- 02, which currently requires you to accomplish the following on certain Fairchild Aircraft SA226 and SA227 series airplanes: modify the parking brake system; and inspect (repetitively) certain landing gear brake assemblies. That AD resulted from wheel brake system malfunctions on several of the affected airplanes where regular brake system maintenance had been performed. This AD retains the modification and inspection requirements of AD 92-01-02 and incorporates inspection and replacement requirements for additional landing gear brake assemblies. The actions specified by this AD are intended to prevent wheel brake system malfunctions that could result in a fire in the brake area.
To address this problem, you must accomplish the following:
| Action | Compliance time | Procedures |
|---|---|---|
| (1) Modification: For all affected airplanes, modify the parking days after brake system | Within 90 calendar days after January 16, 1992 (the effective date of AD 92-01-02) | The instructions included in either Fairchild Service Bulletin (SB) 227-32-017 or Fairchild SB 226-32-049, both Issued: November 14, 1984, as applicable. |
| (2) Initial Inspection: For all affected airplanes equipped with a B.F. Goodrich landing gear brake assembly, part number 2-1203, 2-1203-1, 2-1203-3, or an FAA-approved equivalent part number, inspect and conduct measurements of the brake wear and clearance limits | Required at the times that follow: (i) For any installed B.F. Goodrich landing gear brake assembly, P/N 2-1203-3 (or FAA-approved equivalent part number): Within 100 hours time-in-service (TIS) after January 16, 1992 ((the effective date of AD 92-01-02) (ii) For any installed B.F. Goodrich landing gear brake assembly, P/N 2-1203 or 2-1203-1 (or FAA-approved equivalent part number): Within the next 100 hours TIS after October 6, 200 (the effective date of this AD) (iii) For any B.F. Goodrich landing gear brake assembly, P/N 2-1203, 2-1203-1, or 2-1203-3 (or FAA-approved equivalent part number), that is installed after October 6, 2000 (the effective date of this AD): Within 250 hours TIS after installation | Use the procedures in B.F. Goodrich No. 1498, Issued: October 26, 1989. The wear and maximum clearance limits specified in this AD take precedence over those specified in the service information. |
| (3) Overhaul or Replacement: For all affected airplanes equipped with a B.F. Goodrich landing gear brake assembly, part number 2-1203, 2-1203-1, 2-1203-3, or an FAA-approved equivalent part number, if wear measure is found that exceeds the maximum allowable clearance (0.250-inch (6.35 millimeter), overhaul or replace the landing gear brake assembly | Prior to further flight after the inspection where the wear or maximum clearance is exceed | The instructions included in the applicable maintenance manual. |
| (4) Repetitive Inspections: For all affected airplanes equipped with a B.F. Goodrich landing gear brake assembly, part number 2-1203, 2-1203-1, 2-1203-3, or an FAA-approved equivalent part number, repetitively inspect and conduct measurements of the brake wear and clearance limits | (i) If the clearance is.200 inches or more, but is less than.250 inches: inspect at 75-hour TIS intervals until the clearance is.250 inches or more at which time replacement is required (ii) If clearance is found that is less than.200 inches: inspect at 250-hour TIS intervals until the clearance is.200 inches or more | Use the procedures in B.F. Goodrich Service Bulletin No. 1498, Issued: October 26, 1989. The wear and maximum clearance limits specified in this AD take precedence over those specified in the service information. |
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.
