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PUBLICATION IN THE FEDERAL REGISTER]. ".•. ,~

DATES: This AD is effective [INSERT DATE 35 DAYS AFTER DATE OF

accelerate skin crack growth and could result in rapid decompression of the fuselage.

This reduced structural integrity can increase loading in the fuselage skin, which will

night cycle stresses from both pressurization and maneuver loads. We are issuing this A

to detect and correct fatigue cracking of certain fuselage frames and stub beams and

possible severed frames, which could result in reduced structural integrity of the frame-s

and corrective actions if necessary. This AD results from repOits of the detection of

requires repetitive inspections for cracking of certain fuselage frames and stub beams,

repetitive inspections. For aiIplanes on which a certain repair is done, this AD also

necessary. 1l1is AD also provides for an optional repair, which would terminate the

DEPARTMENT OF TRANSPORTATION

fatigue cracks at c,ertain frame sections, in addilion to stub beam cracking, caused by hig

737-200, ·300, -400, and -500 series airplanes. This AD requires repetitive inspections

for cracking of certain fuselage frames and stub beams, and corrective actions if

Federal Aviation Administration

AGENCY: Federal Aviation Administration (FAA), DOT.

RIN 2120-AA64

SUMMARY: We are adopting a new aif\vorthiness directive (AD) for certain Model

ACTION: Final rule.

[Docket No. FAA~2010-0437; Directorate Identifier 2009-NM-130-AOj Amendmen

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ftci:) I :11'1n If-''''! 39-**; AD **] ''\0, ~ - t; ) - fJ0

14 CFR Part 39

Ain,"ol-thincss Directives; The Boeing Company Model 737-200, -300, -400, and -500

Series Airplanes
DEPARTMENT OF TRANSPORT ATlON

[4910-13-P]

C()"l1JRRf.~r.f.'

ROlITlNG -'YM ,

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2010-0437; Directorate Identifier 2009-NM-130-AD; Amendment 11/2rib 1~539 R01JflNGSnIOOl

39-'*; AD **] J-D{O- ").5- Db -1

RlN 2120-AA64 (. r.:.<.--

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Airworthiness Directives; The Boeing Company Model 737-200, -300, -400, and -500 (lJ(z....1, (r>

ROUTLNG ""MIIOL

Series Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

, TFi

ACTION: Final rule.

ROU'I"ING,\"MHOL

SUMMARY: We are adopting a new airworthiness directive (AD) for certain Model

737-200, ~300, -400, and -500 series airplanes. This AD requires repetitive inspections

for cracking of certain fuselage frames and stub beams, and corrective actions if

necessary" This AD also provides for an optional repair, which would terminate the

repetitive inspections. For airplanes on which a certain repair is done, this AD also

requires repetitive inspections for cracking of certain fuselage frames and stub beams,

and corrective actions if necessary. This AD results from reports oftbe detection of Kl1l!TINGSI'MILOL

< . k . f .. dd.l b b k· d b l' b"rum"".•OC,e-- latIgue crac s at certam rame sectLons, In a Itlpn to stu earn crac mg, cause y ug

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flight cycle stresses from both pressurization and maneuver loads. We are issuing this A ATE

I

to detect and correct fatigue cracking of certain fuselage frames and stub beams and "OWTING5y~n!\lL

possible severed frames, which could result in re;duced structural integrity of the frames. I~"L,'LS."JG

This reduced structural integrity can increase loading in the fuselage skin, which will

accelerate skin crack growth and could result in rapid decompression of the fuselage.

DATES: This AD is effective [INSERT DATE 35 DAYS AFTER DATE OF

PUBLICATION IN THE FEDERAL REGISTEh
{49JO-I3-Pj

DEPARTMENT OF TRANSPORT AnON

Federal Aviation Administration

14 CFR Par) 39

INIIlAlS/S'"

rDocket No. FAA-2010-0437; Directorate Ideo ifier2009-NM-130-AD; Amendmc iD ....tV; 1f.cJ.

39-"; AD "J I .~ Iq ID

<G Sl""""-

o

RJN 2120~AA64 AI5f>t - (l!<l5

nmAl.S'Sl<i

Ainyorthincss Directives; The Boeing Company Model 737-200, -300, -400, and -50 . '\ r •• "'eve ~

Series Airplanes "H/ Iq 10

repetitive inspections. For airplanes on which a certain repair is done, this AD also ovn"".........."".

eFT-.

requires repetitive inspections for cracking of certain fuselage frames and stub beams, 'mnAlS/S

AGENCY: Federal Aviation Administration (FN.I\), DOT.

ACTION: Final rule.

and corrective actions if necessary. This AD results from reports of the detection of

fatigue cracks at certain frame sectiolls, in additiln to stub beam cracking, caused by

flight cycle Slresses from both pressurization animaneuver loads. We are issuing this

to detect and correct fatigue cracking of certain sciage frames and stub beams and

SUMMARY: We are adopting a new ainvorthiness directive (AD) for certain Model

737-200, -300, ADO, and -500 series airplanes. This AD requires repetitive inspection

I

for cracking of certain fuselage frames and stub ~eams, and corrective actions if

necessary. This AD also provides for an optional repair, which would tem1inate the

possible severed frames, which could result in reduced structural integrity of the fram

This reduced structural integrity can increase loa1ing in the fuselage skin, which will

accelerate skin crack growth and could result in rapid decompression of the fuselage.

,

DATES: This .W is effective [INSERT DATE 35 DAYS AFTER DATE OF

PUBLICATION IN THE FEDERAL REGISTER].

1-
1491O-13-PI

DEPARTMENT OF TRANSPORT ATlON

Federal Aviation Administration

14 CFR Part 39

'Nrn •••s/S'G

IDocket No. FAA-2010-0437; Directorate Idenrifier 2009-NM-130·ADj Amcndmc 5;?-- ll); ISoJ

39-**- AD HI II " • ! h 10

fatigue cracks at certain frame sections, in addition to stub beam cracking, caused by I . llGSW,OOl

and corrective actions if necessary. This AD results from reports of the detection of

requires repetitive inspections for cracking of certain fuselage frames and stub beams, INln

necessary. This AD also provides for an optional repair, which would terminate the

repetitive inspections. For airplanes on which a certain repair is done, this AD also

for cracking of certain fuselage frames and shlb beams, and corrective actions if

ovr.'G 5'. w,

RIN 2120-AA64 AlS"t-IUlS

Airworthiness Directives; The 80elng Company Model 737-200, -300, -400, and -50 ":~~I~

Series Airplimcs A'~fIlq 1.0

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

SUMMARY: We are adopting a new ainvorthiness directive (AD) for certain Model

737-200, ··]00, -400, and -500 series airplanes. This AD requires repetitive inspection

flight cycle stresses from both pressurization and maneuver loads. We are issuing this, -D'S/5!l>

to detect and correct fatigue cracking of certain fuselage frames and stub beams and

possible severed frames, which could result in reduced structural integrity ofthc fram

This reduced struchual integrity can inc'rease loading in the fuselage skin, which will

J~J "AC<!SJG

accelemte skin crack growth and could result in rapid decompression orthe fuselage.

AlE

DATES: This AD is effective [INSERT DATE 35 DAYS APTER DATE OF

PUBLICATION IN THE FEDERAL REGISTER].