AD/AMD 10/25 Amdt 1 Wing Anti-Ice Hoses 9/2005 TX
Applicability:
Dassault Aviation Falcon 10 Aircraft.
Requirement:
- Aircraft Flight Manual (AFM) Limitations and Placard: Revise
the Limitations section of the Aircraft Flight Manual (AFM); and
install a placard in the flight deck, to include the following
information.
“Flights into known or forecast icing conditions
are prohibited.”
The AFM revision may be done by inserting a copy of this
Airworthiness Directive (AD) into the AFM. Install the placard in
clear view of the pilot.
OR
2. Inspection: (a) Perform a detailed
inspection of the internal walls of the hoses for delamination, and
perform any applicable corrective action as per provisions of
Dassault Alert Service Bulletin (SB) F10-A312 Revision 1 dated 27
June 2005 or later EASA approved revisions. If any blister is found
in the hose, replace that hose with a hose part numbered
(P/N)
FAL1005D.
Submit the inspection findings to the manufacturer. The report
must include the aircraft serial number, the location of the hose
(inboard/outboard), the number of flight hours since hose
installation, the number of cycles in icing conditions, and the
manufacturing date and batch number of the hose.
(b) Insert the following instruction in the Airworthiness
Limitations section of the Aircraft Maintenance Manual (AMM). This
can be achieved by inserting a copy of this AD in Chapter 5-40 of
the AMM:
Operation
|
Reference
|
Threshold
|
Interval
|
30 - Anti-icing Boroscopic inspection of the wing
slats anti-ice flexible hoses. |
(SB)
F10-A312 R1 |
|
10 flights with anti-ice system activated.
Life limit: 3000 hours.
|
Note 1: EASA Airworthiness Directive EASA.A.AD.01001 dated
29 June 2005 refers.
Compliance:
- Within the next 10
flights with Anti-Ice system in use, after the effective date of
this Directive.
- (a) Within the next 10 flights with Anti-Ice system in use,
after the effective date of this Directive; and then repetitively
every 10 flight cycles with anti ice system activated.
Note 2: With this end in view, the flight crew
should record on the flight log, any time the Anti-Ice system
switch is ON, in flight, (i.e. to the exclusion of the pre-flight
check) to be able to determine the first time- limited inspection
& the recurring ones.
2. (b) Within five days, after the effective date of this
Directive. This Amendment becomes effective on 5 July 2005.
Background: There has been a reported incident
of a wing anti-ice flexible hose collapse on a Falcon 10 aircraft.
The hose collapsed because of the internal ply separation of the
flexible hose. Due to the resulting insufficient anti-icing, ice
accretion on the wing
can occur, jeopardizing the aircraft flight performance and
safety.
The original issue of this Airworthiness Directive required
repetitive inspections at an interval of 60 flight cycles. This
amendment introduces repetitive boroscope inspection with reduced
periodicity of 10 flight cycles.
The original issue of this Airworthiness Directive became
effective on 8 March 2005.