Airworthiness Directive · Amendment 39-17098 · Electrical power
Dassault Aviation Airplanes
This AD applies to Dassault Aviation Model FALCON 7X airplanes, certificated in any category, all serial numbers except those on which Dassault Aviation Modification M724 is embodied.
We are superseding an existing airworthiness directive (AD) for certain Dassault Aviation Model FALCON 7X airplanes. That AD currently requires revising the Abnormal Procedures and Limitations sections of the Dassault F7X Airplane Flight Manual. This new AD requires a test of the power distribution control units (PDCU) cards and generator control units (GCU) cards to detect faulty components, and if any faulty components are found, replacing any affected PDCU or GCU card. This AD was prompted by a determination that additional actions are necessary to address the identified unsafe condition. We are issuing this AD to detect and correct a leakage failure mode of transient voltage suppression (TVS) diodes used on PDCU cards or GCU cards in the primary power distribution boxes (PPDB), which, in combination with other system failures, could lead to loss of controllability of the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
This AFM revision is retained from AD 2010-18-03, Amendment 39-16416 (75 FR 51931, August 24, 2010): Within 30 days after September 8, 2010 (the effective date of AD 2010-18-03, revise the Abnormal Procedures and Limitations sections of the Dassault F7X AFM to include the following statement. This may be done by inserting copies of this AD into the AFM Limitations section and Abnormal Procedures section.
Upon display of ELEC:BUS MISCONFIG TIED in Crew Alerting System (Abnormal procedure 3-190-20), land at nearest suitable airport
Upon display of ELEC:LH ESS PWR LO or ELEC:LH ESS NO PWR (Abnormal procedure 3-190-40), land at nearest suitable airport
Upon display of ELEC:RH ESS PWR LO and ELEC:RH ESS NO PWR (Abnormal procedure 3-190-45), land at nearest suitable airport
Upon display of HYD:BACKUP PUMP HI TEMP (Abnormal procedure 3-250-15), set off the pump and if the backup pump is still rotating (green) in hydraulic synoptic, descend to a safe altitude or below 15,000 ft
Caution: These temporary amendments take precedence over the same procedures displayed through the Electronic Check List (ECL) in the aeroplane.
Note 1 to paragraph (g) of this AD: When a statement identical to that in paragraph (g) of this AD has been included in the Limitations section and Abnormal Procedures section in the general revisions of the AFM, the general revisions may be inserted into the AFM, and the copy of this AD may be removed.
For airplanes identified in Dassault Mandatory Service Bulletin 7X-133, dated December 4, 2009: Within 9 months after the effective date of this AD, perform a test of the PDCU and GCU cards to detect faulty components, in accordance with the Accomplishment Instructions of Dassault Mandatory Service Bulletin 7X-133, dated December 4, 2009. If any faulty components are found, before further flight, replace any affected PDCU or GCU card, in accordance with the Accomplishment Instructions of Dassault Mandatory Service Bulletin 7X-133, dated December 4, 2009.
For airplanes identified in Dassault Mandatory Service Bulletin 7X-133, dated December 4, 2009: Accomplishing the actions specified in paragraph (h) of this AD, within 9 months after the effective date of this AD, in accordance with the service information specified in paragraphs (i)(1), (i)(2), and (i)(3) of this AD, is acceptable for compliance with the actions specified in paragraph (h) of this AD.
(1) Goodrich Service Bulletin 80232190-24-01, dated August 13, 2009.
(2) Goodrich Service Bulletin 80232191-24-01, dated August 13, 2009.
(3) Goodrich Service Bulletin 80232192-24-01, dated August 13, 2009.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
