2010-13-11 Fokker Services B.V.: Amendment 39-16342. Docket No. FAA- 2010-0220; Directorate Identifier 2008-NM-166-AD.
Effective Date
(a) This airworthiness directive (AD) becomes effective July 28, 2010.
Affected ADs
(b) None.
Applicability
(c) This AD applies to Fokker Services B.V. Model F.28 Mark 0070 and Mark 0100 airplanes, certificated in any category, all serial numbers, if an actuator having part number (P/N) 9409122 or P/N 53- 0013 is installed on one or both fuel crossfeed valves or one or both fuel fire shut-off valves.
Subject
(d) Air Transport Association (ATA) of America Code 28 and 76: Fuel and Engine Controls, respectively.
Reason
(e) The mandatory continuing airworthiness information (MCAI) consists of three EASA ADs: 2007-0122, dated May 3, 2007 (corrected May 7, 2007); 2009-0116, dated May 29, 2009; and MCAI 2009-0168, dated August 3, 2009. EASA AD 2007-0122 states:
In-service experience revealed that, due to their position on the aircraft, ice may form on actuators P/N 9409122 installed on fuel crossfeed valves and fuel fire shut-off valves. Tests revealed that the ice can prevent the actuator and thus the valve from operating in flight (frozen stuck). A new actuator is being developed by Fokker Services. However, an airworthiness assessment revealed that interim actions are required for actuators p/n 9409122 installed on fuel crossfeed valves and fuel fire shut-off valves until the new actuators are installed. Fokker Services have issued Service Bulletin (SB) SBF100-28-049 to introduce interim actions that will reduce the probability that fuel crossfeed and fuel fire shut-off valves equipped with actuators p/n 9409122 do not operate due to ice. The interim actions consist of an operational check of the actuators and the application of a grease layer on the actuators, followed by a weekly visual check of the applied grease layer and a 4-weekly operational check of the actuators.
For the reasons stated above, this Airworthiness Directive (AD) requires compliance with instructions contained in the referenced SB. This AD has been re-published to correct typographical errors in the `Remarks' section, where the word `Proposed' should have been deleted.
EASA AD 2009-0116 states:
Due to their position on the aeroplane, fuel crossfeed valve actuators P/N 9409122 are susceptible to freezing, which has an adverse effect on the operation of the valve. This condition, if not corrected, may generate fuel asymmetry alerts when a valve remains in the open position after being selected closed. It may also prevent the flight crew from correcting a fuel asymmetry when a valve remains in the closed position after being selected open. One event was reported where, due to such problems, the flight crew shut down an engine in-flight and diverted the aircraft.
Aeroplanes with serial numbers 11244 through 11441 were delivered from the production line with actuators P/N 9401037 ("chimney type'') installed. However, on some aeroplanes, these actuators have subsequently been replaced in service with actuators P/N 9409122 (using mounting blocks P/N 7923505) on one or both fuel crossfeed valves. As a result, those aeroplanes are also affected by this unsafe condition.
To address and correct this unsafe condition, EASA issued AD 2008-0126 that required the replacement of all P/N 9409122 fuel crossfeed valve actuators in accordance with Fokker Services SBF100- 28-046 with new actuators developed by the manufacturer Eaton Aerospace, P/N 53-0013, which have improved reliability and are less susceptible to freezing.
Following the introduction of actuator P/N 53-0013 in service, Eaton Aerospace reported manufacturing and design errors on actuators with P/N 53-0013. As a result of these errors, the top-cap of the actuator may become loose, possibly leading to actuator failure. Eaton Aerospace has eliminated these problems by introducing a new actuator P/N 53-0027 and Fokker Services have published SBF100-28-061 to introduce these improved actuators on aeroplanes.
As the compliance time of EASA AD 2008-0126 has not yet expired, both P/N 9409122 and P/N 53-0013 fuel crossfeed valve actuators can currently be installed on aeroplanes affected by this AD.
For the reasons described above, this EASA AD retains the requirements of AD 2008-0126, which is superseded, and adds the requirement to install the new P/N 53-0027 actuators. This AD also allows direct installation of P/N 53-0027 on aeroplanes that are still in pre-SBF100-28-046 configuration, provided this is done within the compliance time as established for that SB in AD 2008- 0126 and retained by this new AD.
EASA AD 2009-0168 states:
Due to their position on the aeroplane, fuel fire shut-off valve actuators P/N 9409122 are susceptible to freezing, which has an adverse effect on the operation of the valve. Also, due to various causes, the failure rate of actuator P/N 9409122 is higher than expected. Failure or freezing of the actuator may prevent the flight crew to close the fuel fire shut-off valve in case of an engine fire.
Aeroplanes serial numbers 11244 through 11441 were delivered from the production line with actuators P/N 9401037 ("chimney type'') installed. However, on some aeroplanes, these actuators have subsequently been replaced in service with actuators P/N 9409122 (using mounting blocks P/N 7923505) on one or both fuel fire shut- off valves. As a result, those aeroplanes are also affected by this unsafe condition.
To address and correct this unsafe condition, EASA issued AD 2008-0193, requiring the replacement of all P/N 9409122 fuel fire shut-off valve actuators with new actuators developed by the manufacturer Eaton Aerospace, P/N 53-0013, which have improved reliability and are less susceptible to freezing.
Following the introduction of actuator P/N 53-0013 in service, Eaton Aerospace reported manufacturing and design errors on actuators withP/N 53-0013. As a result of these errors, the top-cap of the actuator may become loose, possibly leading to actuator failure. Eaton Aerospace has eliminated these problems by introducing a new actuator P/N 53-0027 and Fokker Services have published SBF100-76-020 to introduce these improved actuators on aeroplanes.
As a consequence of EASA AD 2008-0193, both P/N 9409122 and P/N 53-0013 fuel fire shut-off valve actuators are currently installed on aeroplanes affected by this AD.
For the reasons described above, this EASA AD supersedes AD 2008-0193 and requires the installation of new P/N 53-0027 actuators. This AD also prohibits the installation of P/N 53-0013 actuators in accordance with SBF100-76-018 (which has been cancelled), as previously required by EASA AD 2008-0193.
Compliance
(f) You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Inspections and Tests for Fuel Crossfeed Valves and Fuel Fire Shut-Off Valves
(g) For airplanes with an actuator having P/N 9409122 on one or both fuel crossfeed valves or one or both fuel fire shut-off valves: Within 30 days after the effective date of this AD, perform an operational test of, and application of grease on, the left-hand (LH) and right-hand (RH) fuel crossfeed valve actuators and fuel fire shut off valve actuators, in accordance with Part 1 of the Accomplishment Instructions of Fokker Service Bulletin SBF100-28- 049, dated April 3, 2007.
(h) For airplanes equipped with an actuator having P/N 9409122 on one or both fuel crossfeed valves or one or both fuel fire shut- off valves: Within 7 days after completion of the actions required by paragraph (g) of this AD, and thereafter at intervals not to exceed 7 days, perform a general visual inspection of the applied grease layer on the LH and RH fuel crossfeed valve actuators and fuel fire shut off valve actuators, in accordance with Part 2 of the Accomplishment Instructions of Fokker Service Bulletin SBF100-28- 049, dated April 3, 2007. If the layer of grease on any valve actuator is found to be less than 2 to 3 millimeters, before further flight, reapply grease, in accordance with Part 1 of the Accomplishment Instructions of Fokker Service Bulletin SBF100-28- 049, dated April 3, 2007.
(i) For airplanes equipped with an actuator having P/N 9409122 on one or both fuel crossfeed valves or one or both fuel fire shut- off valves: Within 28 days after completion of the actions required by paragraph (g) of this AD, and thereafter at intervals not to exceed 28 days, perform an operational test of the LH and RH fuel crossfeed valve actuators and fuel fire shut off valve actuators, in accordance with Part 3 of the Accomplishment Instructions of Fokker Service Bulletin SBF100-28-049, dated April 3, 2007.
(j) During any of the tests required by paragraphs (g) and (i) of this AD, if a fuel fire shut-off valve actuator fails the operational test, before further flight, do the action specified in paragraph (j)(1) or (j)(2) of this AD.
(1) Do the replacement specified in paragraph (l) of this AD.
(2) Replace the valve actuator with a serviceable part having P/ N 9409122, using a method approved by either the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA; or the European Aviation Safety Agency (or its delegated agent).
Note 1: Guidance on replacing the valve actuator with a serviceable part can be found in the Fokker 70/100 Aircraft Maintenance Manual.
(k) During any of the tests required by paragraphs (g) and (i) of this AD, if a fuel crossfeed valve actuator fails the operational test, before further flight, do the action specified in paragraph (k)(1) or (k)(2) of this AD.
(1) Do the replacement specified in paragraph (o) of this AD.
(2) Replace the valve actuator with a serviceable part having P/ N 9409122, using a method approved by either the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA; or the EASA (or its delegated agent).
Note 2: Guidance on replacing the valve actuator with a serviceable part can be found in the Fokker 70/100 Aircraft Maintenance Manual.
Replacement of Fuel Fire Shut-Off Valves
(l) For airplanes equipped with an actuator having P/N 9409122 on one or both fuel fire shut-off valves: Except as required by paragraph (j) of this AD, within 15 months after the effective date of this AD, replace each fuel fire shut-off valve actuator having P/ N 9409122 with a fuel fire shut-off valve actuator having P/N 53- 0027 and accomplish the associated modifications, in accordance with Part 1A or 1B, as applicable, of the Accomplishment Instructions of Fokker Service Bulletin SBF100-76-020, dated April 20, 2009. After installation of fuel fire shut-off valve actuators having P/N 53- 0027 on an airplane, the requirements of paragraphs (g), (h), and (i) of this AD no longer apply to the fuel fire shut-off valve actuators installed on that airplane.
(m) For airplanes equipped with an actuator having P/N 53-0013 on one or both fuel fire shut-off valves: Within 15 months after the effective date of this AD, replace each fuel fire shut-off valve actuator having P/N 53-0013 with a fuel fire shut-off valve actuator having P/N 53-0027, in accordance with Part 2 of the Accomplishment Instructions of Fokker Service Bulletin SBF100-76-020, dated April 20, 2009.
(n) As of the effective date of this AD, do not install a fuel fire shut-off valve actuator having P/N 53-0013 on any airplane.
Replacement of Fuel Crossfeed Valves
(o) For airplanes equipped with an actuator having P/N 9409122 on one or both fuel crossfeed valves: Do the actions specified in paragraph (o)(1) or (o)(2) of this AD.
(1) Except as specified in paragraph (k)(1) of this AD, within 12 months after the effective date of this AD, replace each fuel crossfeed valve actuator having P/N 9409122 with a fuel crossfeed valve actuator having P/N 53-0013, and before further flight, accomplish the associated modifications, in accordance with the Accomplishment Instructions of Fokker Service Bulletin SBF100-28- 046, dated March 27, 2008; and do the replacement required by paragraph (p) of this AD at the time specified in paragraph (p) of this AD. After installing fuel crossfeed valve actuators having P/N 53-0013 on an airplane, the requirements of paragraphs (g), (h), and (i) of this AD no longer apply to the fuel crossfeed valve actuators installed on that airplane.
(2) Within 12 months after the effective date of this AD, replace each fuel crossfeed valve actuator having P/N 9409122 with a fuel crossfeed valve actuator having P/N 53-0027, in accordance with Part 1A or 1B, as applicable, of the Accomplishment Instructions of Fokker Service Bulletin SBF100-28-061, dated April 20, 2009. After installing fuel crossfeed valve actuators having P/N 53-0027 on an airplane, the requirements of paragraphs (g), (h), and (i) of this AD no longer apply to the fuel crossfeed valve actuators installed on that airplane.
(p) For airplanes equipped with an actuator having P/N 53-0013 on one or both fuel crossfeed valves: Within 18 months after the effective date of this AD, replace each fuel crossfeed valve actuator having P/N 53-0013 with a fuel crossfeed valve actuator having P/N 53-0027, in accordance with Part 2 of the Accomplishment Instructions of Fokker Service Bulletin SBF100-28-061, dated April 20, 2009. After installing fuel crossfeed valve actuators having P/N 53-0027 on an airplane, the requirements of paragraphs (g), (h), and (i) of this AD no longer apply to the fuel crossfeed valve actuators installed on that airplane.
(q) After accomplishing the actions specified in paragraph (p) of this AD, do not install any fuel crossfeed valve actuator having P/N 53-0013 on any airplane.
FAA AD Differences
Note 3: This AD differs from the MCAI and/or service information as follows: Although paragraph (5) of EASA AD 2007-0122, dated May 3, 2007, allows operating the airplane in accordance with the Master Minimum Equipment List (MMEL) Item 28-23-1 of MMEL Fokker 70/MMEL Fokker 100, paragraph (l) of this AD requires replacing affected valves before further flight.
Other FAA AD Provisions
(r) The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. Send information to ATTN: Tom Rodriguez, Aerospace Engineer, International Branch, ANM-116, Transport Airplane Directorate, FAA, 1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone (425) 227-1137; fax (425) 227-1149. Before using any approved AMOC on any airplane to which the AMOC applies, notify your principal maintenance inspector (PMI) or principal avionics inspector (PAI), as appropriate, or lacking a principal inspector, your local Flight Standards District Office.
(2) Airworthy Product: For any requirement in this AD to obtain corrective actions from a manufacturer or other source, use these actions if they are FAA-approved. Corrective actions are considered FAA-approved if they are approved by the State of Design Authority (or their delegated agent). You are required to assure the product is airworthy before it is returned to service.
(3) Reporting Requirements: For any reporting requirement in this AD, under the provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.), the Office of Management and Budget (OMB) has approved the information collection requirements and has assigned OMB Control Number 2120-0056.
Related Information
(s) Refer to MCAI European Aviation Safety Agency Airworthiness Directives 2009-0168, dated August 3, 2009, 2009-0116, dated May 29, 2009, and 2007-0122, dated May 3, 2007 (corrected May7, 2007); and the Fokker service bulletins specified in Table 1 of this AD; for related information.
Table 1--Related Service Information
Fokker service bulletin
Dated
SBF100 28 046 ................
March 27, 2008.
SBF100 28 049 ................
April 3, 2007.
SBF100 28 061 ................
April 20, 2009.
SBF100 76 020 ................
April 20, 2009.
Material Incorporated by Reference
(t) You must use the service information contained in Table 2 of this AD, as applicable, to do the actions required by this AD, unless the AD specifies otherwise.
Table 2--Material Incorporated by Reference
Fokker service bulletin
Dated
SBF100 28 046, including the drawings identified in Table 3 of this AD.
March 27, 2008.
SBF100 28 049 ................
April 3, 2007.
SBF100 28 061, including the drawings identified in Table 4 of this AD.
April 20, 2009.
SBF100 76 020, including the drawings identified in Table5 of this AD.
April 20, 2009.
Table 3--Drawings Included in Fokker Service Bulletin SBF100-28-046
Fokker Drawing
Sheet
Issue
Dated
W41194
007
D ...........................................................................
March 27, 2008.
W41194
008
D ...........................................................................
March 27, 2008.
Table 4--Drawings Included in Fokker Service Bulletin SBF100-28-061
Fokker Drawing
Sheet
Issue
Dated
W41194
007
D
April 20, 2009.
W41194
008
D
April 20, 2009.
Table 5--Drawings Included in Fokker Service Bulletin SBF100-76-020
Fokker Drawing
Sheet
Issue
Dated
W41460
002
Original
April 20, 2009.
W41460
003
Original
April 20, 2009.
W59170
12
AC
March 20, 2008.
(1) The Director of the Federal Register approved the incorporation by reference of this service information under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) For service information identified in this AD, contact Fokker Services B.V., Technical Services Dept., P.O. Box 231, 2150 AE Nieuw-Vennep, the Netherlands; telephone +31 (0)252-627-350; fax +31 (0)252-627-211; e-mail technicalservices.fokkerservices@stork.com; Internet http:// www.myfokkerfleet.com.
(3) You may review copies of the service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington. For information on the availability of this material at the FAA, call 425-227-1221.
(4) You may also review copies of the service information that is incorporated by reference at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to: http:// www.archives.gov/federal_register/code_of_federal_regulations/ ibr_locations.html.