(4910-I3-P(

lmtIG SYMOOIAirplanes

products listed above. That NPRM proposed a onc-time inspection to detect damage of

the wire assemblies of the tail tank fuel system, a wiring change, and corrective actions

Federal Aviation Administration

Ain"orthiness Directives; McDonnell Douglas Corporation Model MO-l]

DEPARTMENT OF TRANSPORT AnON

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Supplemental notice of proposed rulemaking (NPRM); reopening of comme l /~ D/,o

period.

SU.MMARY: We are revising an earlier proposed ainvorthiness directive (AD) for the

-H ILf D 2..21J

[Docket No. FAA-2010-++++; Directorate Identifier 2009-NM-252-ADJ

RIN 2120-AA64

14 CFR Part 39

necessary. That NPRM was prompted by fuel system reviews conducted by the INITIALSISK;

manufacturer. This action revises that NPRM by adding, for certain airplanes, a general b,,,,,,, ----

visual inspection for con-ect installation of the self-adhering, high-temperature electricalk",,,",,,,,,,,,,;,,,,,,,",,,,~

insulation tape;"installation ofa wire assembly support bracket and routing wire INITIAlSISIG

assembly; changing wire supports; and installati.on of a wire protection bracket. We are

proposing this supplemental NPRM to detect and correct a potential of ignition sources

inside fuel tanks, which, in combination with flammable vapors, could result in a fuel

tank fire or explosion, and consequent loss ofthe airplane.

DATES: We must receive comments on this supplemental NPRM by [INSERT DATE

45 DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER].

ADDRESSES: You may send comments by any ofthe following methods:

AI"

OI/l"INC SV"lOOl

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(4910-13-P]

DEPARTMENT OF TRANSPORTATION

}1~ederalAviation Administration

14 CFR Part 39

(Docket No. F AA-2010-++++j Directorate Identifier 2009-NM-252-ADl

RIN 2120-.'1..'1.64

Airworthiness Directives; McDonnell Douglas Corporation Model MD-ll and MD-lIF

Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Supplemental natke of proposed rulemaking (NPRM); reopening of comment

period.

SUMMARY: We are revising an earlier proposed airworthiness directive (AD) for the

products listed above. That NPRM proposed a onc-time inspection to detect damage of

the wire assemblies of the tail tank fuel system, a wiring change, and corrective actions if

necessary. That NPRM was prompted by fuel system reviews conducted by the

manufacturer. This action revIses that NPRM by adding a general visual inspection for

correct installation of the self-adhering, high~temperature electrical insulation tape, and

changing wire supports. We are proposing this supplemental NPRM to detect and correct

a potential of ignition sources inside fuel tanks, which, in combination with flammable

vapors, could result in a fuel tank fire or explosion, and consequent loss of the airplane.

DATES: We must receive comments on this supplemental NPRM by [INSERT DATE

45 DAYS AFTER DATE OF PUBLICATION IN TI-IE FEDERAL REGISTER1-

ADDRESSES: You may send comments by any of the following methods:

• Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the

instructions for submiuing comments .

• Fax: 202-493-2251.

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FAA Form 1360-14.1 (5·89) OFFICIAL FILE COPY ,U.5. GO\fERNMENTPRINTlNG OFFiCE; 1995· 1~·21'