Airworthiness Directive · Amendment 39-18122 · Navigation
Dassault Aviation Airplanes
This AD applies to Dassault Aviation Model FALCON 7X airplanes, certificated in any category, all serial numbers.
We are superseding Airworthiness Directive (AD) 2011-13-07 for all Dassault Aviation Model FALCON 7X airplanes. AD 2011-13-07 requires revising the airplane flight manual (AFM) to include a procedure to power off a radio-altimeter or revert to the correct radio-altimeter output. This new AD requires revising the AFM to include a simpler procedure to revert to the correct radio-altimeter output. This AD was prompted by an analysis which showed that AFM procedures could be simplified. We are issuing this AD to ensure that the flightcrew has procedures in the event of a radio-altimeter lock-up, which inhibits the display of warnings along with certain abnormal conditions, during the switch into landing mode during altitude cruise. If not corrected, this could result in the flightcrew being unaware of possible system failures that require immediate action by the flightcrew, leading to possible loss of control of the airplane.
This paragraph restates the requirements of paragraph (h) of AD 2011-13-07, Amendment 39-16730 (76 FR 36283, June 22, 2011), with editorial changes. For airplanes on which M0566 or Dassault Service Bulletin Falcon 7X-100 has been accomplished: Within 14 days after July 27, 2011 (the effective date of AD 2011-13-07), revise the Limitations Section of the Dassault Falcon 7X AFM to include the statement in figure 1 to this paragraph. This may be done by inserting a copy of this AD in the AFM. When a statement identical to that in figure 1 to this paragraph has been included 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 from the AFM. Accomplishing the revision required by paragraph (h) of this AD terminates the requirements of this paragraph, and after the revision required by paragraph (h) of this AD has been done, before further flight, remove the revision required by this paragraph.
| If radio-altimeter #1 lock-up conditions occur in flight, revert to the correct radio-altimeter output, in accordance with the instructions of Falcon 7X AFM procedure 3-140-65B and 3-140-70A. |
| Dispatch of the airplane with any radio-altimeter inoperative is prohibited. |
For airplanes on which M0566 or Dassault Service Bulletin Falcon 7X-100 has been accomplished: Within 30 days after the effective date of this AD, do the actions specified in paragraphs (h)(1) and (h)(2) of this AD.
(1) Revise the Limitations Section of the Dassault Falcon 7X AFM to include the statement in figure 2 to this paragraph. This may be done by inserting a copy of this AD in the AFM. Doing this revision terminates the requirements of paragraph (g) of this AD and the revision required by paragraph (g) of this AD must be removed. When a statement identical to that in figure 2 to this paragraph has been included 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 from the AFM.
| If radio-altimeter miscompare indication occurs in flight, revert to the correct radio-altimeter output, in accordance with the instructions of Falcon 7X AFM procedure 3-140-70A. |
| Dispatch of the airplane with any radio-altimeter inoperative is prohibited. |
(2) Revise the Abnormal Procedures section to include Procedure 3-140-70A, “Avionics—Sensor miscompare (A/C with M566),” Issue 2, of Section 3—Abnormal Procedures, of the Dassault Falcon 7X Airplane Flight Manual, DGT 105608, Revision 15, dated January 30, 2012; or Procedure 3-140-70A, “Avionics—Sensor miscompare,” Issue 4, of Section 3—Abnormal Procedures, of the Dassault Falcon 7X Airplane Flight Manual, DGT105608, Revision 18, dated November 15, 2013; into the AFM.
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
