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Division Boeing 737 Series Aeroplanes - AD/B737/130 Amdt 2 - Rudder PCU - Displacement Tests - Boeing 737 Series Aeroplanes | Zoe

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AD/B737/130 Amdt 2 - Rudder PCU - Displacement Tests

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Boeing 737 Series Aeroplanes

AD/B737/130 Amdt 2	Rudder PCU - Displacement Tests	10/2005

Applicability:	All Model B737 series aircraft.
Requirement:	1. Perform a displacement test on the secondary slide in the dual servo valve in the rudder PCU in accordance with Boeing Alert Service Bulletin 737-27A1221 Revision 1 dated January 28, 1999 (Model 737-100, -200, -300, -400 and -500 series) or in accordance with Boeing Alert Service Bulletin 737-27A1222, Revision 1, dated January 28, 1999 (Model 737-600, -700 and -800 series).2. Subject to the test in Requirement 1 proving negative (valve fails test), replace the valve assembly in accordance with Boeing Alert Service Bulletin737-27A1221 Revision 1 dated January 28, 1999 (Model 737-100, -200, -300,-400 and -500 series) or in accordance with Boeing Alert Service Bulletin737-27A1222, Revision 1, dated January 28, 1999 (Model 737-600, -700 and-800 series), and repeat test.3. Do not install on any aircraft any main rudder PCU having P/N 65-44861-12 and serial number 3509A or lower or, any PCU having P/N 65C37053-(XX) (Model 737-100, -200, -300, -400 and -500 series) or PCU having P/N 251A301-(XX) and serial number 0299 or lower (Model 737-600, -700 and -800 series) unless the PCU nameplate has been vibro-engraved with the letter “C” following the serial number.Accomplishment of the requirements of AD/B737/201 (FAA AD 2002-20-07) constitutes terminating action for the requirements of this Directive.Note 1: Subsequent serial numbers greater than those listed in Requirement 3 are displacement tested as part of the certified production process and do not require the letter “C” to be vibro-engraved.Note 2: FAA AD 99-11-05 Amendment 39-11175 issued December 7, 1999 refers and corrects FAA AD 99-11-05 dated 24 May 1999.
Compliance:	1. Initial Test.a. Model 737-100, -200, -300, -400 and -500 series aeroplanes the test must be completed within 16 months time in service from 12 August 1999. Thereafter, repeat the displacement test at intervals not exceeding 24,000 flight hours.
	b. For aeroplanes equipped with a PCU having P/N 65-44861-12 and serial number 3509A or lower or P/N 65C37053-(XX), the test must be completed within 16 months time in service from 12 August 1999. Thereafter, repeat the displacement test at intervals not exceeding 24,000 flight hours.c. For Model 737-600, -700 and -800 aeroplanes having line numbers 1 through 222 inclusive that are equipped with PCU’s having P/N 251A301-(XX) and serial number 299 or lower, conduct the test within 16 months time in service from 12 August 1999. Thereafter, repeat the displacement test at intervals not exceeding 24,000 flight hours.d. For all other aeroplanes, conduct the test prior to the accumulation of 24,000 total flight hours or within 30 days from the effective date of this Directive, whichever is the later. Thereafter, repeat the displacement test at intervals not exceeding 24,000 flight hours.2. Prior to further flight.3. After 30 November 2000.The compliance times remain unchanged by this issue.