Airplanes

14 CFR Part 39

14910-13-Pj

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

09 ':/1

(Docket No. FAA-2010-*****; Directorate Identifier 20] O-NM-119-AD]

RlN 2120-AA64

Airwortbiness Directives; Bombardier, Inc. Model BD-700-1 Al 0 and 80-700-1 A 11

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (1RM).

~UMMARY: ~e propose to adopt a new ailofthiness dire~tive (A~) for t~e product

hsted above. ThIs proposed AD results from mandatory contmumg auworthmess

infonnation (MeAl) originated by an aviation LthoritY of another country to identify ~ I "(lUTING sv,

and correct an unsafe condition on an aviation product. The MeAl describes the unsafe INlTL"~'•.>,,;;

condition as:

There have been hvo in-service reports ef main landing gear (l\1LG) tire

failure on landing, during which a flailipg tire tread caused damage to

NO.2 and NO.3 hydraulic system lines lin the wing auxiliary spar area 011

the left side of the aircraft. Tills damagy resulted in the Joss of supply

pressure to the inboard and outboard br~kes, as the only remaining braking

source available \:Vasthe NO.3 hydraulip system accumulator. The

degradation of the brake system performance could adversely affect the

aircraft during landing.

ROUTING -'YMI)(lL

'N'T'AI.£S'G

DATE

O()l!TING .\\'M601.

INlTJAU;','G

* * * * * * *

DATE

,OUTING "·MI)(lL

The unsafe condition is loss ofbrakiJlg capability, which could reduce the ability of the

I ,,"lr'AlS'SLG

flightcrew to safely land tbe airplane. The proPlosed AD would require actions that are OAT~

intended to address the unsafe condition described in the MeAl.
-

14910-J3-P] l=~""'''''~"-'

1tOl.'IDlCo ''''''110I.

LCiB-AEG

I)EPARTM F:NTOF TRANSI'ORT ATION

Federal Aviation Administration

14 CFR Part 39

IDocket No. FAA-2010-**"'**; Directorate Identifier 2010-NM-119-ADJ

RIN 2120-AA64

" •• YUllI)<.

ANE-171

Ainvonbinc.ss Directives; Bombardier, Inc. Model DD-700-1AJ 0 and BD-700-1All

Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed-rule making (NPRM).

SUMMARY: We propose to adopt a new airworthiness directive (AD) for the products_

listed above. Tbis proposed AD results from mandatory continuing airwonhincss

information (MeAl) originated by an aviation authorily of another country to identify

and correct an unsafe cOlJdition on an aviation product. The MeAl describes the unsafe

condition as:

There have been two in-service reports of~nain landing, gear (MLG) tire

failure on landing,.duting which a f1ailingltire tread caused dwnage to

NO.2 and No.3 hydraulic system lines in the wing auxiliary spar area un

the left:side of the 'aircraft: Tlus damage resulted in the loss of supply

pressure Lothe inboard.and olltboard brakes, as the only remaining braking

source available was the NO.3 hydraulic system accumulator. The

degradation ofthebiake system performance could adversely affecl the

aircran during landing.

..,1.""'" ••••""I.

ANE-171

DA'rP.

.,)q)n"" ,»,out.

• • • • • •

The unsafe condition is loss of braking capability. which could reduce the ability of the •.•. m

flightcrew to safely land the.airplane. The proposed AD would require actions that are

intended to address the w1safe condition described in the MeAl.