AD 97-17-08 Airworthiness Directives; Raytheon Aircraft Company Model 1900D Airplanes (Formerly Known as Beech Aircraft Corporation Model 1900D Airplanes)

Makes named: beech, raytheon. Models named: 1900D. Read the applicability below — it usually turns on serial or part numbers too.

Model 1900D airplanes (serial numbers UE-176 through UE-280, UE-282 and UE-284) certificated in any category, that have not had the propeller removed and re-installed since factory installation, or have not had the attaching bolts re- torqued. Note 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (c) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.

Required within the next 50 hours time-in-service (TIS), unless already accomplished (accomplished according to Raytheon Aircraft Company Letter No. 52-0092, dated July 22, 1997). To prevent fatigue cracking and failure of the propeller mounting bolts, which if not detected and corrected, could result in loss of the propeller, accomplish the following: [[Page 44406]] (a) Accomplish the following if the airplane records indicate that the propeller has not been removed and re-installed since the factory installation. (1) Remove spinner dome, cowling, and hardware as required to access propeller attachment bolts. (2) Reposition the beta system, using beta positioning tool, and remove the safety wire from the propeller mounting bolts (part number (P/N) B3347). (3) Check the torque level of the P/N B3347 propeller bolts. (i) If the torque is less than 60 ft-lbs, prior to further flight, replace the bolts with another FAA-approved propeller bolt using the installation procedures and torque sequence detailed in the Model 1900D Maintenance Manual (61-10-00) (A/Steps 1, 2, and B/ Step 3). (ii) If torque is 60 ft-lbs or greater, torque the bolts to a value of 100-105 ft-lbs using the torque sequence detailed in the Model 1900D Maintenance Manual (61-10-00) (B/Step 3). (4) Re-safety wire the propeller bolts and remove the beta system positioning tool. (5) Re-install the hardware, the spinner, and the cowlings. (b) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished. (c) An alternative method of compliance or adjustment of the compliance time that provides an equivalent level of safety may be approved by the Manager, Wichita Aircraft Certification Office, Room 100, 1801 Airport Rd., Wichita, Kansas 67209. The request shall be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and then send it to the Manager, Wichita Aircraft Certification Office. Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from Wichita Aircraft Certification Office. (d) Information related to this AD may be inspected at the FAA, Central Region, Office of the Assistant Chief Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri 64106. (e) This amendment (39-10111) becomes effective on September 24, 1997. Issued in Kansas City, Missouri, on August 14, 1997. Michael Gallagher, Manager, Small Airplane Directorate, Aircraft Certification Service. [FR Doc. 97-22146 Filed 8-20-97; 8:45 am] BILLING CODE 4910-13-U