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ADs updated daily at www.Tdata.com
PIPER AIRCRAFT, INC.:
Amendment 39-21855; Docket No. FAA-2020-1006; Project Identifier 2019-CE-047-AD.
(a) EFFECTIVE DATE This airworthiness directive (AD) is effective January 25, 2022. (b) AFFECTED ADS This AD replaces AD 78-02-03 [Reg. Docket No. 77-EA-81, Amendment 39- 3128] (43 FR 3079, January 23, 1978) (AD 78-02-03). (c) APPLICABILITY This AD applies to Piper Aircraft, Inc., Model PA-23-250 airplanes, serial numbers 27-7654001 through 27-7954121, certificated in any cat- egory. (d) SUBJECT Joint Aircraft System Component (JASC) Code 5510 Horizontal Stabilizer Structure. (e) UNSAFE CONDITION This AD was prompted by reports of cracks developing on the stabilator structure. The FAA is issuing this AD to prevent weakening of the stabilator structure and to detect and correct cracks on the stabilator tip tube and weight assembly. The unsafe condition, if not addressed, could cause weakening of the complete structure and lead to loss of the trim tab and counter balance weight, which may result in reduced airplane control. (f) COMPLIANCE Comply with this AD within the compliance times specified, unless al- ready done. (g) PREVIOUSLY REQUIRED ACTIONS RETAINED FROM AD 78-02-03 (1) Within 50 hours time-in-service (TIS) after January 26, 1978 (the effective date of AD 78-02-03), do the following inspections and modi- fications. (i) For airplanes with serial numbers 27-7654001 through 27-7754054, in- spect both stabilator tip ribs for missing rivets and missing tube and weight assembly attachment screws and if necessary alter in accordance with Piper Service Bulletin (SB) 547, dated March 1, 1977. (ii) For airplanes with serial numbers 27-7654001 through 27-7754127, 27- 7754130, 27-7754131, 27-7754133 through 27-7754136, and 27-7754138 through 27-7754144, replace the right and left stabilator tab forward inboard rib/horn assemblies by installing Piper Kit 761 143 or equiv- alent kit in accordance with Piper SB 569, dated August 24, 1977. (iii) For airplanes with serial numbers 27-7654001 through 27-7754041 equipped with stabilators Piper part number (P/N) 15658-2, 15658-3, 15658-22 or 15658-23, reinforce the mounting of the stabilator tube and weight assemblies by installing additional nose-ribs with Piper Kit 761 141 or equivalent kit in accordance with Piper Service Letter 807A, dated September 8, 1977. (2) Before further flight after completing the alterations in paragraphs (g)(1)(ii) and (iii) of this AD, balance the stabilator. (h) INSPECTION OF STABILATOR TIP TUBE AND WEIGHT ASSEMBLY Within 10 hours TIS after the effective date of this AD or within 100 hours TIS after completing the last inspection required by paragraph (a) of AD 78-02-03, whichever occurs later, and thereafter at intervals not to exceed 100 hours TIS, inspect the left and right stabilator balance weight assemblies for cracks and complete any necessary repairs by following Parts I and II of the Instructions in Piper SB No. 540B, dated February 9, 2021, except you are not required to contact Piper for repair instructions. Instead, repair in accordance with FAA-approved procedures. (i) CREDIT FOR PREVIOUS ACTIONS You may take credit for the initial inspection and corrective actions required by paragraph (h) of this AD if you performed those actions before the effective date of this AD using Piper SB No. 540, dated January 4, 1977, or SB No. 540A, dated October 20, 1980. (j) ALTERNATIVE METHODS OF COMPLIANCE (AMOCS) (1) The Manager, Atlanta ACO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (k) of this AD. (2) Before using any approved AMOC, notify your appropriate principal in- spector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. (3) For service information that contains steps that are labeled as Required for Compliance (RC), the following provisions apply. (i) The steps labeled as RC, including substeps under an RC step and any figures identified in an RC step, must be done to comply with the AD. An AMOC is required for any deviations to RC steps, including substeps and identified figures. (ii) Steps not labeled as RC may be deviated from using accepted methods in accordance with the operator's maintenance or inspection program without obtaining approval of an AMOC, provided the RC steps, including substeps and identified figures, can still be done as specified, and the airplane can be put back in an airworthy condition. (k) RELATED INFORMATION For more information about this AD, contact John Marshall, Aviation Safety Engineer, Atlanta ACO Branch FAA, 1701 Columbia Avenue, College Park, GA 30337; phone: (404) 474-5524; fax (404) 474-5605; email john. firstname.lastname@example.org. (l) MATERIAL INCORPORATED BY REFERENCE (1) The Director of the Federal Register approved the incorporation by reference of the service information listed in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51. (2) You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise. (i) Piper Service Bulletin No. 547, dated March 1, 1977. (ii) Piper Service Bulletin No. 569, dated August 24, 1977. (iii) Piper Service Letter No. 807A, dated September 8, 1977. (iv) Piper Service Bulletin No. 540B, February 9, 2021. (3) For the service information identified in this AD, contact Piper Air- craft, Inc., 2926 Piper Drive, Vero Beach, FL 32960; phone: (772) 299- 2141; website: https://www.piper.com/. (4) You may view this referenced service information at the FAA, Airworthi -ness Products Section, Operational Safety Branch, 901 Locust, Kansas City, MO 64106. For information on the availability of this material at the FAA, call (817) 222-5110. (5) You may view this service information that is incorporated by refer- ence at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, email: fr. email@example.com, or go to: https://www.archives.gov/federal- register/cfr/ibr-locations.html. Issued on December 3, 2021. Lance T. Gant, Director, Compliance & Airworth -iness Division, Aircraft Certification Service. FOR FURTHER INFORMATION CONTACT: John Marshall, Aviation Safety Engineer, Atlanta ACO Branch, FAA, 1701 Columbia Avenue, College Park, GA 30337; phone: (404) 474-5524; fax: (404) 474-5605; email firstname.lastname@example.org.
DEPARTMENT OF TRANSPORTATION
The FAA estimates the following costs
to do any necessary repairs
For airplanes with kit P/N 763 987,
the cost to repair cracking may