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87-25-04: 87-25-04 ROLLS-ROYCE: Amendment 39-5766. Applies to Rolls-Royce plc (R-R) RB211-535C and -535E4 series turbofan engines.
Compliance is required as indicated, unless already accomplished.
To prevent low pressure (LP) fuel filter to high pressure (HP) pump tube frettage and cracking that can lead to fuel leaks and substantial fuel quantity loss, accomplish the following:
(a) For the RB211-535E4 engines installed on Boeing 757 aircraft and operated in any of the following configurations: (1) the fuel Quantity Indication System (FQIS) inoperative with under the provisions specified in the Master Minimum Equipment List (MMEL), Item 28-41-1; (2) with one of the Fuel Quantity Processor (FQP) Channels inoperative under the provisions specified in the MMEL Item 28-41-2; (3) with both Flight Management Computer (FMC) Systems inoperative under the provisions specified in the MMEL, Item 34-61-1; or (4) with the FQIS functional, both FQP Channels functional, and at least one FMCSystem functional, but operating without the provisions of Boeing Operations Manual Bulletin (OMB) Number 87-7, dated August 20, 1987, accomplish the following:
(1) Replace fuel tube Part Number (P/N) UL14975, prior to further flight, with the new fuel tube configuration, P/N UL16692, in accordance with the Accomplishment Instructions contained in R-R Service Bulletin (SB) RB.211-73-8195, dated May 2, 1986.
(2) Visually inspect fuel tube P/N UL16692 for frettage each day of operation, in accordance with paragraph D(2) "RB211-535E4 engines - L.P. fuel tubes" of the Accomplishment Instructions contained in R-R SB RB.211-73-8438, Revision 1, dated July 31, 1987, until installation of clips, R-R P/N 1010792, in accordance with the Accomplishment Instructions contained in R-R SB RB.211-73-8457, Revision 1, dated August 7, 1987.
(3) Remove from service and replace with serviceable parts, prior to further flight, fuel tube assemblies found to be cracked or fretted.
(b)For the RB211-535C engines installed on Boeing 757 aircraft and operated in any of the following configurations: (1) with the Fuel Quantity Indication System (FQIS) inoperative under the provisions specified in the MMEL, Item 28-41-1; (2) with one of the Fuel Quantity Processor (FQP) Channels inoperative under the provisions specified in the MMEL, Item 28-41-2; (3) with both Flight Management Computer (FMC) Systems inoperative under the provisions specified in the MMEL, Item 34-61-1; or (4) with the FQIS functional, both FQP Channels functional, and at least one FMC System functional, but operating without the provisions of Boeing Operations Manual Bulletin (OMB) Number 87-7, dated August 20, 1987, accomplish the following:
(1) Replace fuel tube P/N LK78017, prior to further flight, with the new fuel tube configuration, P/N UL22067, in accordance with the Accomplishment Instructions contained in R-R SB RB.211-73-8502, dated August 28, 1987.
(2) Visually inspect fuel tubeP/N UL22067 for frettage each day of operation, in accordance with paragraph D(2) "RB211-535C engines - L.P. fuel tubes" of the Accomplishment Instructions contained in R-R SB RB.211-73-8438, Revision 1, dated July 31, 1987, until installation of clip, R-R P/N 1011161, in accordance with the Accomplishment Instructions contained in R-R SB RB.211-73-8534, dated September 18, 1987.
(3) Remove from service and replace with serviceable parts, prior to further flight, fuel tube assemblies found to be cracked or fretted.
(c) For the RB211-535E4 engines installed on Boeing 757 aircraft operated with the FQIS functional, both FQP Channels functional, at least one FMC System functional, and in accordance with the provisions of Boeing OMB Number 87-7, dated August 20, 1987, accomplish the following:
(1) Dye penetrant inspect (red or fluorescent dye) fuel tube P/N UL14975 for cracks not later than the next "A" check after the effective date of this AD, in accordance with paragraph D(1) of the Accomplishment Instructions contained in R-R SB RB.211-73-8438, Revision 1, dated July 31, 1987.
(2) Reinspect for cracks in accordance with the requirements of paragraph (c)(1) above, thereafter, at intervals not to exceed 1,000 hours in service, until replacement of fuel tube, P/N UL14975, in accordance with the Accomplishment Instructions contained in R-R SB RB.211-73-8195.
(3) Visually inspect fuel tubes P/N UL14975 and UL16692 for frettage, not later than the next "A" check after the effective date of this AD, in accordance with paragraph D(2) "RB211-535E4 engines - L.P. fuel tubes" of the Accomplishment Instructions contained in R-R SB RB.211-73-8438, Revision 1, dated July 31, 1987. Replace clips, R-R P/N 3504226 or R-R P/N 3504225, removed during the inspection, with new clips, R-R P/N 3504226 or R-R P/N 3504225, or with clips, R-R P/N 1010792, prior to reinstallation.
(4) Reinspect for frettage in accordance with the requirements of paragraph (c)(3) above, thereafter, at intervals not to exceed "A" check, fuel tubes not incorporating clips, R-R P/N 1010792, in accordance with the Accomplishment Instructions contained in R-R SB RB.211-73-8457, Revision 1, dated August 7, 1987, until incorporation of clips, R-R P/N 1010792.
(5) Remove from service and replace with serviceable parts, prior to further flight, fuel tube assemblies found to be cracked or fretted.
(d) For the RB211-535C engines installed on Boeing 757 aircraft operated with the FQIS functional, both FQP Channels functional, at least one FMC System functional, and in accordance with the provisions of Boeing OMB Number 87-7, dated August 20, 1987, accomplish the following:
(1) Dye penetrant inspect (red or fluorescent dye) fuel tube P/N LK78017 for cracks not later than the next "A" check after the effective date of this AD, in accordance with paragraph D(1) of the Accomplishment Instructions contained in R-R SB RB.211-73-8438, Revision 1, dated July31, 1987.
(2) Reinspect for cracks in accordance with the requirements of paragraph (d)(1) above, thereafter, at intervals not to exceed "A" check, until replacement of fuel tube, P/N UL78017, in accordance with the Accomplishment Instructions contained in R-R SB RB.211-73-8502, dated August 28, 1987.
(3) Visually inspect fuel tubes P/N UL78017 and P/N UL22067 for frettage not later than the next "A" check after the effective date of this AD, in accordance with paragraph D(2) "RB211-535C engines - L.P. fuel tubes" of the Accomplishment Instructions contained in R-R SB RB.211-73-8438, Revision 1, dated July 31, 1987. Replace clip, R-R P/N 3504234 or R-R P/N 3504233, removed during the inspection, with new clip, R-R P/N 3504234 or R-R P/N 3504233, or with clip R-R P/N 1011161, prior to reinstallation.
(4) Reinspect for frettage in accordance with the requirements of paragraph (d) (3) above, thereafter, at intervals not to exceed "A" check, fuel tubes not incorporatingclip, R-R P/N 1011161, in accordance with the Accomplishment Instructions contained in R-R SB RB.211-73-8534, dated September 18, 1987, until incorporation of clip, R-R P/N 1011161.
(5) Remove from service and replace with serviceable parts, prior to further flight, fuel tube assemblies found to be cracked or fretted.
(e) For RB211-535E4 engines, accomplish the following on or before March 31, 1988:
(1) Replace fuel tube P/N UL14975 with the new fuel tube configuration, P/N UL16692, in accordance with the Accomplishment Instructions, contained in R-R SB RB.211-73-8195, dated May 2, 1986.
(2) Replace R-R P/N 3504226 or R-R P/N 3504225 clips with R-R P/N 1010792 clips on fuel tube P/N UL16692, in accordance with the Accomplishment Instructions contained in R-R SB RB.211-73-8457, Revision 1, dated August 7, 1987.
(f) For RB211-535C engines, accomplish the following on or before March 31, 1988:
(1) Replace fuel tube P/N LK78017 with the new fuel tube configuration, P/N UL22067, in accordance with Accomplishment Instructions contained in R-R SB RB.211-73-8502, dated August 28, 1987.
(2) Replace R-R P/N 3504234 or R-R P/N 3504233 clip with R-R P/N 1011161 clip on fuel tube P/N UL22067, in accordance with the Accomplishment Instructions contained in R-R SB RB.211-73-8534, dated September 18, 1987.
NOTE: Accomplishment of the requirements of R-R SB RB211-72-7437 (interim clip configuration) is not considered an alternative to the requirements of R-R SB RB.211-73-8457 or SB RB.211-73-8534.
Aircraft may be ferried in accordance with the provisions of FAR 21.197 and 21.199 to a base where the AD can be accomplished.
Upon request, an equivalent means of compliance with the requirements of this AD may be approved by the Manager, Engine Certification Office, Aircraft Certification Division, Federal Aviation Administration, New England Region, 12 New England Executive Park, Burlington, Massachusetts 01803.
Upon submissionof substantiating data by an owner or operator through an FAA maintenance inspector, the Manager, Engine Certification Office, New England Region, may adjust the compliance times specified in this AD.
The Rolls-Royce SB's identified and described in this document are incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received the engine manufacturer's SB's may obtain copies upon request to Rolls-Royce plc, Technical Publication Department, P.O. Box 31, Derby DE2 8BJ, England.
These documents also may be examined at the Office of the Regional Counsel, Federal Aviation Administration, New England Region, 12 New England Executive Park, Burlington, Massachusetts 01803, Room 311, Rules Docket Number 87-ANE-34, between the hours of 8:00 a.m. and 4:30 p.m., Monday through Friday, except federal holidays.
This amendment becomes effective on December 8, 1987.
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