# Boeing Alert Requirements Bulletin 737-27A1325 RB: No revision named

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- Title as filed: RB-737-27A1325-00--
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### Page 1

Commercial 
Airplanes
737
Requirements Bulletin
ALERT
Number: 737-27A1325 RB
Original Issue: July 14, 2023
ATA System: 2760 2761
SUBJECT: FLIGHT CONTROLS - Flight Spoiler Control System - Spoiler Control Wire Bundles
Inspection
EXPORT CONTROLLED - This technology or software is subject to the U.S. Export Administration Regulations
(EAR), (15 C.F.R. Parts 730-774). No authorization from the U.S. Department of Commerce is required for
export, re-export, in-country transfer, or access EXCEPT to country group E:1 or E:2 countries/persons per
Supp.1 to Part 740 of the EAR.
9E991ECCN:
Copyright © 2023 Boeing.
Unpublished Work. All Rights Reserved.
Treatment of this document and its content is governed by contract with Boeing. Rights to use this document
are licensed on a per aircraft basis and such rights may not be transferable. For more information, contact The
Boeing Company.
Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, 787, Dreamliner,
BBJ, DC-8, DC-9, DC-10, KC-10, KC-46, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8, Poseidon and
Boeing liveries are all trademarks owned by The Boeing Company; and no trademark license is granted in
connection with this document unless provided in writing by Boeing.
Original Issue: July 14, 2023
737-27A1325 RB
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2.0

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REQUIREMENTS BULLETIN 737-27A1325
ALERTALERT
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Table of Contents
1 . E F F E C T I V I T Y  ................................................ 5
A. Airplanes ................................................ 5
B . S p a r e s  A f f e c t e d  ............................................ 7
2. CONCURRENT REQUIREMENTS ..................................... 8
3 . C O M P L I A N C E  ................................................ 8
4. APPROVAL ................................................ 1 0
5. ACCOMPLISHMENT INSTRUCTIONS .................................. 1 1
A. General Information ......................................... 1 1
B. Work Instructions ........................................... 1 3
FIGURE 1: LEFT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES - CLEARANCE
MEASUREMENT ........................................ 1 6
FIGURE 2: LEFT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES AND
STRUCTURE - DETAILED INSPECTION .......................... 2 0
FIGURE 4: RIGHT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES -
CLEARANCE MEASUREMENT ................................ 2 3
FIGURE 5: RIGHT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES AND
STRUCTURE - DETAILED INSPECTION .......................... 2 7
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### Page 4

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REQUIREMENTS BULLETIN 737-27A1325
ALERTALERT
BLANK PAGE

### Page 5

Commercial 
Airplanes
737
Requirements Bulletin
ALERT
Number: 737-27A1325 RB
Original Issue: July 14, 2023
ATA System: 2760 2761
SUBJECT: FLIGHT CONTROLS - Flight Spoiler Control System - Spoiler Control Wire Bundles
Inspection
THIS DOCUMENT IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN
PARAGRAPH 1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS DOCUMENT
TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS DOCUMENT TO THE
NEW OWNER. THIS IS AN ENHANCED REQUIRED FOR COMPLIANCE DOCUMENT. THE BOEING
PROCESSES USED TO CREATE THE SERVICE BULLETIN (SB) AND THE REQUIREMENTS BULLETIN
(RB) ENSURE THAT THE INFORMATION BETWEEN "RC START" AND "RC END" IN THE SB ARE IDENTICAL
TO THE INFORMATION IN THE SAME SECTIONS (COMPLIANCE, WORK INSTRUCTIONS…) OF THE RB
WHICH THE SB REFERS TO AS THE RELATED DOCUMENT.
1. Effectivity
A. Airplanes
This bulletin is applicable to 737-8, 737-9, 737-8200 Airplane(s), line number(s) 5602, 5668, 5788,
5852, 5902, 5948, 5992, 6034, 6074, 6114, 6154, 6188, 6222, 6272, 6290, 6308, 6326, 6344,
6360, 6372, 6384, 6396, 6408, 6420, 6430, 6441, 6448, 6456, 6464, 6472, 6481, 6490, 6499,
6508, 6515, 6521, 6528, 6535, 6542, 6548, 6555, 6562, 6569, 6575, 6582, 6589, 6594, 6598,
6603, 6607, 6612, 6616, 6621, 6625, 6630, 6634, 6639, 6643, 6648, 6652, 6657, 6661, 6666,
6672, 6677, 6681, 6686, 6690, 6695, 6699, 6704, 6708, 6713, 6717, 6722, 6726, 6731, 6735,
6740, 6749, 6753, 6758, 6762, 6767, 6771, 6776, 6780, 6783, 6785, 6789, 6792, 6794, 6796,
6803, 6805, 6807, 6810, 6814, 6816, 6819, 6821, 6825, 6828, 6830, 6834, 6837, 6839, 6841,
6843, 6848, 6850, 6852, 6855, 6859, 6861, 6864, 6866, 6868, 6872, 6875, 6877, 6881, 6884,
6886, 6890, 6893, 6895, 6897, 6899, 6904, 6906, 6908, 6911, 6915, 6917, 6920, 6922, 6926,
6929, 6931, 6935, 6938, 6940, 6942, 6944, 6949, 6951, 6953, 6956, 6960, 6963, 6965, 6968,
6970, 6973, 6975-6976, 6978, 6980, 6983, 6985, 6988, 6990-6991, 6993, 6995, 6998, 7000, 7003,
7005-7006, 7008, 7010, 7013, 7015, 7018, 7020, 7023, 7025, 7027-7028, 7030, 7033, 7035, 7038,
7040, 7042-7043, 7045, 7048, 7050, 7053, 7055, 7060, 7062, 7064-7065, 7068, 7070, 7073, 7075,
7077, 7079-7080, 7083, 7085, 7088, 7090, 7093, 7095-7096, 7098, 7100, 7103, 7105, 7108,
7110-7111, 7113, 7115, 7118, 7120, 7123, 7125, 7128, 7130, 7132-7133, 7135, 7138, 7140, 7143,
7145, 7147-7148, 7150, 7153, 7155, 7158, 7160, 7163, 7165-7166, 7168, 7170, 7173, 7175, 7178,
7180-7181, 7183, 7185-7186, 7188, 7190, 7192-7193, 7195-7196, 7198, 7200-7201, 7203, 7205,
7207-7208, 7210-7211, 7213, 7215-7216, 7218, 7220, 7222-7223, 7225-7226, 7228, 7230-7231,
7233, 7236-7238, 7240-7241, 7245-7246, 7248, 7250, 7252-7253, 7255-7256, 7258, 7261, 7265,
7267-7268, 7270-7271, 7275-7276, 7278, 7281-7283, 7285-7286, 7288, 7290-7291, 7293,
7295-7296, 7298, 7300-7301, 7303, 7305-7306, 7308, 7310-7311, 7313, 7315-7316, 7320-7321,
7326, 7328, 7330-7331, 7333, 7335-7336, 7338, 7340-7341, 7343, 7348, 7350, 7353, 7355-7356,
7358, 7360-7361, 7363, 7365-7366, 7368, 7370, 7373, 7375, 7378, 7380-7381, 7383-7386,
7388-7390, 7393-7395, 7398-7401, 7403-7406, 7409-7411, 7413-7414, 7416, 7418-7421,
7423-7425, 7428, 7430-7431, 7433-7436, 7438-7439, 7445-7446, 7448-7449, 7453-7454, 7456,
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### Page 6

7458-7459, 7463, 7465, 7468-7469, 7473-7475, 7478-7479, 7481, 7483-7484, 7486, 7489, 7491,
7495, 7498-7500, 7504-7505, 7509, 7513-7515, 7521, 7523, 7525-7526, 7533-7535, 7538-7541,
7543, 7548-7550, 7554, 7556, 7558-7559, 7561, 7563, 7565, 7568-7569, 7571, 7574, 7578-7580,
7583, 7585-7586, 7588, 7590, 7593, 7598, 7602, 7604-7609, 7612, 7618, 7621-7623, 7626-7629,
7632, 7634, 7636-7637, 7641, 7643, 7648, 7650, 7656, 7661, 7663-7664, 7668-7670, 7672-7673,
7678-7679, 7681-7684, 7686, 7688-7689, 7694-7695, 7698, 7701-7702, 7707, 7709-7712,
7717-7719, 7724-7726, 7729-7731, 7733, 7736, 7739-7740, 7742-7744, 7747-7749, 7752-7753,
7755-7756, 7758-7759, 7762-7763, 7766-7767, 7769-7770, 7772, 7777, 7780-7781, 7783,
7785-7786, 7788-7789, 7791, 7793, 7799, 7801-7803, 7808, 7810, 7812, 7814, 7818-7819,
7821-7825, 7827, 7830, 7832, 7835-7837, 7839-7842, 7845-7847, 7850, 7852, 7854-7855, 7857,
7861-7862, 7864, 7868-7871, 7873, 7876-7877, 7879-7884, 7886, 7889-7890, 7892, 7894-7898,
7900-7904, 7909, 7913, 7915-7918, 7926-7928, 7942-7943, 7946-7947, 7951, 7957, 7959-7961,
7965, 7967, 7975-7976, 7982, 7984, 7990, 7992, 7994, 7996, 7998-8000, 8002-8003, 8006, 8009,
8013, 8016, 8019-8021, 8023-8024, 8033-8036, 8042-8044, 8047, 8052, 8054, 8063, 8066,
8071-8073, 8075, 8077, 8090-8092, 8094, 8099, 8101-8102, 8104-8120, 8122-8124, 8126-8133,
8135-8138, 8140-8141, 8144-8146, 8148, 8151-8153, 8155, 8157, 8159-8176, 8179, 8184,
8187-8188, 8191-8192, 8195-8196, 8199-8202, 8204, 8207, 8210, 8215-8216, 8218, 8222-8224,
8226-8228, 8230-8232, 8236-8238, 8243, 8246-8247, 8249, 8251-8252, 8255 in 1 Group(s).
Where the effectivity is presented with hyphens between line numbers, the airplane applicability
means "through" and "inclusive", e.g. line numbers 1-9 means line numbers 1 through 9 inclusive.
The Variable Numbers and Group Information for the applicable airplanes is given below.
DESCRIPTIONCONFIGURATIONGROUP
737-8/-8200/-9 Airplanes.-1
Airplane Models:
737-8, 737-8200, 737-9
GroupVariable Number
11A001 - 1A002
11A004 - 1A062
11A070 - 1A075
11A190 - 1A197
11A201 - 1A209
11A211
11A301 - 1A325
11A329 - 1A331
11A401 - 1A414
11A451 - 1A467
11A476 - 1A488
GroupVariable Number
11A490 - 1A492
11A495 - 1A498
11A501 - 1A502
11A521 - 1A523
11A531
11A541 - 1A547
11A549
11A601 - 1A614
11A631
11A676 - 1A691
11A726 - 1A730
GroupVariable Number
11A741 - 1A743
11A751 - 1A757
11A801
11A851 - 1A880
11A884
11A887 - 1A888
11A916 - 1A921
11A926 - 1A934
11A943
11A951 - 1A964
11A967
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REQUIREMENTS BULLETIN 737-27A1325
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GroupVariable Number
11B001 - 1B020
11B026 - 1B032
11B035
11B101 - 1B142
11B201 - 1B212
11B214
11B251 - 1B266
11B326 - 1B329
11B366 - 1B370
11B376 - 1B380
11B386 - 1B389
11B396
11B401 - 1B402
11B411 - 1B412
11B436
11B491 - 1B494
11B497
11B511 - 1B512
11B521 - 1B522
11B531
11B540 - 1B541
11B566 - 1B569
11B576 - 1B578
11B601
11B635 - 1B636
11B651 - 1B657
11B701
11B703
11B801 - 1B815
GroupVariable Number
11B820 - 1B825
11B930 - 1B934
11C001 - 1C005
11C201 - 1C202
11C221 - 1C224
11C237
11C256 - 1C263
11C265
11C301 - 1C303
11C326 - 1C335
11C401 - 1C404
11C451
11C501 - 1C511
11C690
11C692
11C701 - 1C720
11C826 - 1C827
11C886
11C946 - 1C950
11D002 - 1D004
11D051 - 1D066
11D101 - 1D130
11D201 - 1D203
11D236 - 1D238
11D251 - 1D253
11D401 - 1D404
11D426 - 1D440
11D456
11D466 - 1D470
GroupVariable Number
11D501 - 1D503
11D521
11D601 - 1D612
11D701
11F001 - 1F018
11F020 - 1F028
11F030 - 1F071
11J021
11J041 - 1J042
11J066 - 1J067
11J101 - 1J112
11J114
11J122
11J301 - 1J302
11J401 - 1J404
11J601 - 1J602
11J606
11J611
11K043
11K101 - 1K103
11K301 - 1K309
11K351 - 1K353
11K426
11K701 - 1K703
11L001
11L267 - 1L268
11L403 - 1L404
11L451 - 1L466
11L701
B. Spares Affected
None.
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2. CONCURRENT REQUIREMENTS
None.
3. COMPLIANCE
The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to
Requirements Bulletin 737-27A1325 RB. The Airworthiness Directive will make the compliance tasks and
times given in Requirements Bulletin 737-27A1325 RB mandatory.
Accomplish the required action(s), based on the applicable condition(s) in Table 1 and Table 2, in accordance
with Accomplishment Instructions.
When more than one OPTION is given for a CONDITION, do only one of the OPTION numbers. When
more than one ACTION is given for a CONDITION or an OPTION, do all of the ACTION numbers for that
CONDITION or OPTION.
Table 1: Left Wing Inboard Trailing Edge - Spoiler Control Wire Bundles Clearance Measurement
Repeat Inter-
val (Not to Ex-
ceed)
Boeing Recommended
Compliance Time
(Whichever Occurs Later)
ActionCondition
-Within 36 months after the
Original Issue date of Re-
quirements Bulletin 737-
27A1325 RB.
Measure the clearance between
the spoiler control wire bundles
and adjacent structure to see if
clearance requirements are met.
(a)
All Airplanes.
--No further action is required.CONDITION 1: CLEARANCE
REQUIREMENTS ARE MET AT
ALL LOCATIONS.
-Before further flight.Do a Detailed Inspection of the
spoiler control wire bundles and
adjacent structure for chafing
damage.
CONDITION 2: CLEARANCE
REQUIREMENTS ARE NOT
MET AT ANY LOCATION.
-Before further flight.Adjust the spoiler control wire
bundles to make sure clearance
requirements are met. (a)
CONDITION 2.1: WIRE BUN-
DLES AND STRUCTURE
CHAFING DAMAGE ARE NOT
FOUND.
-Before further flight.CONDITION 2.2 (ACTION 1):
Repair any spoiler control wire
bundles damage found and any
structure damage found.
CONDITION 2.2: WIRE BUN-
DLES OR STRUCTURE
CHAFING DAMAGE IS FOUND.
-Before further flight.CONDITION 2.2 (ACTION 2):
Adjust the spoiler control wire
bundles to make sure clearance
requirements are met. (a)
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### Page 9

Table 1: Left Wing Inboard Trailing Edge - Spoiler Control Wire Bundles Clearance Measurement
Repeat Inter-
val (Not to Ex-
ceed)
Boeing Recommended
Compliance Time
(Whichever Occurs Later)
ActionCondition
(a) Clearance requirements:
a. Within 0.5 inch or less from clamp edges, clearance between wire bundle and adjacent structure is
greater than or equal to 0.13 inch.
b. Greater than 0.5 inch from clamp edges, clearance between wire bundle and adjacent structure is
greater than or equal to 0.25 inch.
Table 2: Right Wing Inboard Trailing Edge - Spoiler Control Wire Bundles Clearance Measurement
Repeat Inter-
val (Not to Ex-
ceed)
Boeing Recommended
Compliance Time
(Whichever Occurs Later)
ActionCondition
-Within 36 months after the
Original Issue date of Re-
quirements Bulletin 737-
27A1325 RB.
Measure the clearance between
the spoiler control wire bundles
and adjacent structure to see if
clearance requirements are met.
(a)
All Airplanes.
--No further action is required.CONDITION 3: CLEARANCE
REQUIREMENTS ARE MET AT
ALL LOCATIONS.
-Before further flight.Do a Detailed Inspection of the
spoiler control wire bundles and
adjacent structure for chafing
damage.
CONDITION 4: CLEARANCE
REQUIREMENTS ARE NOT
MET AT ANY LOCATION.
-Before further flight.Adjust the spoiler control wire
bundles to make sure clearance
requirements are met. (a)
CONDITION 4.1: WIRE BUN-
DLES AND STRUCTURE
CHAFING DAMAGE ARE NOT
FOUND.
-Before further flight.CONDITION 4.2 (ACTION 1):
Repair any spoiler control wire
bundles damage found and any
structure damage found.
CONDITION 4.2: WIRE BUN-
DLES OR STRUCTURE
CHAFING DAMAGE IS FOUND.
-Before further flight.CONDITION 4.2 (ACTION 2):
Adjust the spoiler control wire
bundles to make sure clearance
requirements are met. (a)
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REQUIREMENTS BULLETIN 737-27A1325
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### Page 10

Table 2: Right Wing Inboard Trailing Edge - Spoiler Control Wire Bundles Clearance Measurement
Repeat Inter-
val (Not to Ex-
ceed)
Boeing Recommended
Compliance Time
(Whichever Occurs Later)
ActionCondition
(a) Clearance requirements:
a. Within 0.5 inch or less from clamp edges, clearance between wire bundle and adjacent structure is
greater than or equal to 0.13 inch.
b. Greater than 0.5 inch from clamp edges, clearance between wire bundle and adjacent structure is
greater than or equal to 0.25 inch.
4. APPROVAL
This Requirements Bulletin was examined by the Federal Aviation Administration (FAA). The changes
specified in this document comply with the applicable regulations and are FAA approved, as well as European
Union Aviation Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/JAA approved
airplanes listed in this Requirements Bulletin effectivity. This document and its approval were based on the
airplane in its original Boeing delivery configuration or as modified by other Boeing changes.
If an airplane has a non-Boeing modification or repair that affects a component or system also affected by
this Requirements Bulletin, the operator is responsible for obtaining appropriate regulatory agency approval
before incorporating this Requirements Bulletin.
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### Page 11

5.    ACCOMPLISHMENT INSTRUCTIONS
A. GENERAL INFORMATION
NOTE: 1. This is an Enhanced Required for Compliance document. There will be a separate
Service Bulletin (SB) and a separate Requirements Bulletin (RB). If an RB is mandated
by an Airworthiness Directive (AD), then all applicable requirements specified in the
RB must be done. For the related SB, some locations are marked RC Start and RC
End to identify the requirements that are restated from the RB. For the related SB,
the areas between RC Start and RC End, including sub-steps and any figures
identified between RC Start and RC End, must be done to comply with the AD.
Therefore, an Alternative Method of Compliance (AMOC) is required for any deviations
to steps between RC Start and RC End, including substeps and identified figures.
For the related SB, the steps not between RC Start and RC End may be deviated
from using accepted methods in accordance with the operator's maintenance or
inspection program without obtaining approval of an AMOC; this is provided that the
steps between RC Start and RC End, including sub-steps and identified figures, can
still be done as specified, and the airplane can be put back in an airworthy condition.
Figures not required for compliance are omitted from the RB.
2. This is an Enhanced Required for Compliance document. The Boeing processes
used to create the Service Bulletin (SB) and the Requirements Bulletin (RB) ensure
that the information between "RC Start" and "RC End" in the SB are identical to the
information in the same sections (Compliance, Work Instructions...) of the RB which
the SB refers to as the related document.
3. The compliance times for the actions in WORK INSTRUCTIONS are in Compliance.
4. Unless shown differently, these dimensions and tolerances are used:
– Linear dimensions are in inches
– Tolerance on linear dimensions, other than rivet and bolt edge margins, is plus
or minus 0.03 inch
– Tolerance on rivet and bolt edge margin is plus or minus 0.05 inch
– Angular tolerance is plus or minus 2 degrees
– Hole dimensions for standard solid rivets and fasteners are in Structural Repair
Manual (SRM) Chapter 51
– Torque Values:
— Values for structural fasteners are given in 737 Structural Repair Manual,
Chapter 51.
— Values for airframe maintenance tasks are included in Chapter 20 of 737
Aircraft Maintenance Manual (AMM).
— Values for electrical maintenance tasks are included in Chapter 20 of
Standard Wiring Practices Manual (SWPM).
— Values for engine maintenance tasks are included in Chapter 70 of 737
Aircraft Maintenance Manual (AMM).
— Non-standard torque values for maintenance tasks are included in the
applicable installation step.
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### Page 12

5. These work instructions refer to procedures included in other Boeing documents.
When the words "refer to" are used and the operator has an accepted alternative
procedure, the accepted alternative procedure can be used. When the words "in
accordance with" are included in the instruction, the procedure in the Boeing document
must be used.
6. Where the work instructions include installation of a kept part, a new or serviceable
part with the same part number can be installed as an alternative to the kept part.
7. If it is necessary to remove more parts for access, you can remove those parts. If
you can get access without removing identified parts, it is not necessary to remove
all of the identified parts. Jacking and shoring limitations must be observed.
8. Use the approved fastener, process and material substitutions in accordance with
SRM Chapter 51.
9. A Detailed Inspection is defined as: An intensive examination of a specific item,
installation or assembly to detect damage, failure or irregularity. This could include
tactile assessment in which a component or assembly can be checked for
tightness/security. Available lighting is normally supplemented with a direct source
of good lighting at an intensity deemed appropriate. Inspection aids such as mirrors
and magnifying lenses may be necessary. Surface cleaning and elaborate access
procedures may be required.
10. When more than one OPTION is given for a CONDITION, do only one of the OPTION
numbers. When more than one ACTION is given for a CONDITION or an OPTION,
do all of the ACTION numbers for that CONDITION or OPTION.
11. The instructions in Work Instructions and the figures can include operation of tools
or test equipment. Boeing Engineering Tool Drawings, the Illustrated Tool and
Equipment Manual, and the Special Tool and Ground Handling Drawing Index contain
data on versions of the tools or test equipment that you can use. It is permitted to
use replaced tools. It is not permitted to use superseded tools.
12. Refer to the SWPM 20-10-11 and SWPM 20-10-12 for the wire installation procedures,
and SWPM 20-10-19 for the wire separation requirements, as accepted procedures.
13. The necessary conditions for selection of clamp type and size are included in SWPM
20-10-12. If any wire bundle support clamp specified in this service bulletin does not
make a correct fit on the wire bundle, refer to SWPM 20-10-12 as an accepted
procedure to select a clamp that fits correctly.
14. If the length of any fastener specified in this service bulletin does not meet installation
standards given in SRM Chapter 51, then a fastener of the same specification, or
an approved substitute, with a length which meets the installation standards given
in SRM Chapter 51 may be used. In addition, washers may be installed for fastener
grip length in accordance with SRM Chapter 51. Refer to SOPM 20-50-01 for alternate
full threaded fasteners (screws) needed for installation in this service bulletin.
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 14, 2023
737-27A1325 RB
12 of 29
REQUIREMENTS BULLETIN 737-27A1325
ALERTALERT

### Page 13

B. WORK INSTRUCTIONS
Actions Required for Compliance
1. Requirements
Table 1: Left Wing Inboard Trailing Edge - Spoiler Control Wire Bundles Clearance Measurement
Refer to the listed procedures
in SB 737-27A1325 Original
Issue or later approved revi-
sions as an accepted proce-
dure.
Method of
Compliance
ActionCondition
PART 1: PREPARATION-Measure the clearance be-
tween the spoiler control wire
bundles and adjacent struc-
ture to see if clearance re-
quirements are met. (a)
All Airplanes.
-FIGURE 1
APPENDIX A: TYPICAL EXAM-
PLES OF SPOILER CONTROL
WIRE BUNDLES WITH SUFFI-
CIENT AND INSUFFICIENT
CLEARANCE
-
PART 3: RESTORATION-No further action is required.CONDITION 1: CLEARANCE
REQUIREMENTS ARE MET
AT ALL LOCATIONS
-FIGURE 2Do a Detailed Inspection of
the spoiler control wire bun-
dles and adjacent structure
for chafing damage.
CONDITION 2: CLEARANCE
REQUIREMENTS ARE NOT
MET AT ANY LOCATION.
FIGURE 3-Adjust the spoiler control wire
bundles to meet clearance
requirements. (a)
CONDITION 2.1: WIRE BUN-
DLES AND STRUCTURE
CHAFING DAMAGE ARE
NOT FOUND.
APPENDIX A: TYPICAL EXAM-
PLES OF SPOILER CONTROL
WIRE BUNDLES WITH SUFFI-
CIENT AND INSUFFICIENT
CLEARANCE
-
PART 3: RESTORATION-
PART 2: WIRE BUNDLE AND
STRUCTURE REPAIR
-CONDITION 2.2 (ACTION 1):
Repair any spoiler control wire
bundles damage found and
any structure damage found.
CONDITION 2.2: WIRE BUN-
DLES OR STRUCTURE
CHAFING DAMAGE IS
FOUND.
FIGURE 3-CONDITION 2.2 (ACTION 2):
Adjust the spoiler control wire
bundles to meet clearance
requirements. (a)
APPENDIX A: TYPICAL EXAM-
PLES OF SPOILER CONTROL
WIRE BUNDLES WITH SUFFI-
CIENT AND INSUFFICIENT
CLEARANCE
-
PART 3: RESTORATION-
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 14, 2023
737-27A1325 RB
13 of 29
REQUIREMENTS BULLETIN 737-27A1325
ALERTALERT

### Page 14

Table 1: Left Wing Inboard Trailing Edge - Spoiler Control Wire Bundles Clearance Measurement
Refer to the listed procedures
in SB 737-27A1325 Original
Issue or later approved revi-
sions as an accepted proce-
dure.
Method of
Compliance
ActionCondition
(a) Clearance requirements:
a. Within 0.5 inch or less from clamp edges, clearance between wire bundle and adjacent structure is
greater than or equal to 0.13 inch.
b. Greater than 0.5 inch from clamp edges, clearance between wire bundle and adjacent structure is
greater than or equal to 0.25 inch.
Table 2: Right Wing Inboard Trailing Edge - Spoiler Control Wire Bundles Clearance Measurement
Refer to the listed procedures
in SB 737-27A1325 Original
Issue or later approved revi-
sions as an accepted proce-
dure.
Method of
Compliance
ActionCondition
PART 1: PREPARATION-Measure the clearance be-
tween the spoiler control wire
bundles and adjacent struc-
ture to see if clearance re-
quirements are met. (a)
All Airplanes.
-FIGURE 4
APPENDIX A: TYPICAL EXAM-
PLES OF SPOILER CONTROL
WIRE BUNDLES WITH SUFFI-
CIENT AND INSUFFICIENT
CLEARANCE
-
PART 3: RESTORATION-No further action is required.CONDITION 3: CLEARANCE
REQUIREMENTS ARE MET
AT ALL LOCATIONS.
-FIGURE 5Do a Detailed Inspection of
the spoiler control wire bun-
dles and adjacent structure
for chafing damage.
CONDITION 4: CLEARANCE
REQUIREMENTS ARE NOT
MET AT ANY LOCATION.
FIGURE 6-Adjust the spoiler control wire
bundles to meet clearance
requirements. (a)
CONDITION 4.1: WIRE BUN-
DLES AND STRUCTURE
CHAFING DAMAGE ARE
NOT FOUND.
APPENDIX A: TYPICAL EXAM-
PLES OF SPOILER CONTROL
WIRE BUNDLES WITH SUFFI-
CIENT AND INSUFFICIENT
CLEARANCE
-
PART 3: RESTORATION-
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 14, 2023
737-27A1325 RB
14 of 29
REQUIREMENTS BULLETIN 737-27A1325
ALERTALERT

### Page 15

Table 2: Right Wing Inboard Trailing Edge - Spoiler Control Wire Bundles Clearance Measurement
Refer to the listed procedures
in SB 737-27A1325 Original
Issue or later approved revi-
sions as an accepted proce-
dure.
Method of
Compliance
ActionCondition
PART 2: WIRE BUNDLE AND
STRUCTURE REPAIR
-CONDITION 4.2 (ACTION 1):
Repair any spoiler control wire
bundles damage found and
any structure damage found.
CONDITION 4.2: WIRE BUN-
DLES OR STRUCTURE
CHAFING DAMAGE IS
FOUND.
FIGURE 6-CONDITION 4.2 (ACTION 2):
Adjust the spoiler control wire
bundles to meet clearance
requirements. (a)
APPENDIX A: TYPICAL EXAM-
PLES OF SPOILER CONTROL
WIRE BUNDLES WITH SUFFI-
CIENT AND INSUFFICIENT
CLEARANCE
-
PART 3: RESTORATION-
(a) Clearance requirements:
a. Within 0.5 inch or less from clamp edges, clearance between wire bundle and adjacent structure is
greater than or equal to 0.13 inch.
b. Greater than 0.5 inch from clamp edges, clearance between wire bundle and adjacent structure is
greater than or equal to 0.25 inch.
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 14, 2023
737-27A1325 RB
15 of 29
REQUIREMENTS BULLETIN 737-27A1325
ALERTALERT

### Page 16 (OCR)

REQUIREMENTS BULLETIN 737-27A1325
ALERT  ALERT
LEFT WING INBOARD TRAILING EDGE
(TYPICAL)
3021605
FIGURE 1: LEFT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES - CLEARANCE
MEASUREMENT
(SHEET 1 OF 4)
Original Issue: July 14, 2023
737-27A1325 RB
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.  16 of 29

### Page 17 (OCR)

REQUIREMENTS BULLETIN 737-27A1325
ALERT  ALERT
W STA
151
C
SPOILER CONTROL  VIEW LOOKING FORWARD
WIRE BUNDLES  А-A
W STA  W STA
SPOILER CONTROL  202  199
WIRE BUNDLES
Г C
000
CLEARANCE  VIEW LOOKING FORWARD  3021612
MEASUREMENT AREA  B-B
FIGURE 1: LEFT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES - CLEARANCE
MEASUREMENT
(SHEET 2 OF 4)
Original Issue: July 14, 2023
737-27A1325 RB
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.  17 of 29

### Page 18 (OCR)

REQUIREMENTS BULLETIN 737-27A1325
ALERT  ALERT
ADJACENT
STRUCTURE
- 0.5  • 0.5 -  - 0.5 -  - 0.5 -
SPOILER CONTROL
CLAMP  WIRE BUNDLES
TYPICAL
C-C
WITHIN 0.5 INCH OR LESS FROM CLAMP EDGES, CLEARANCE BETWEEN WIRE
BUNDLE AND ADJACENT STRUCTURE IS GREATER THAN OR EQUAL TO 0.13 INCH.
GREATER THAN 0.5 INCH FROM CLAMP EDGES, CLEARANCE BETWEEN WIRE
BUNDLE AND ADJACENT STRUCTURE IS GREATER THAN OR EQUAL TO 0.25 INCH.
3021690
FIGURE 1: LEFT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES - CLEARANCE
MEASUREMENT
(SHEET 3 OF 4)
Original Issue: July 14, 2023
Export Controlled ECCN: 9E991  737-27A1325 RB
Copyright © Unpublished Work - See page 1 for details.  18 of 29

### Page 19

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY
numbers shown below are the number of parts necessary for this figure.
More DataQtyIdentificationNameTaskStep
(a)--CLEARANCEMeasure1
(a) Clearance requirements:
a. Within 0.5 inch or less from clamp edges, clearance between wire bundle and adjacent structure
is greater than or equal to 0.13 inch.
b. Greater than 0.5 inch from clamp edges, clearance between wire bundle and adjacent structure is
greater than or equal to 0.25 inch.
FIGURE 1: LEFT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES - CLEARANCE
MEASUREMENT
(SHEET 4 OF 4)
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 14, 2023
737-27A1325 RB
19 of 29
REQUIREMENTS BULLETIN 737-27A1325
ALERTALERT

### Page 20 (OCR)

REQUIREMENTS BULLETIN 737-27A1325
ALERT  ALERT
LEFT WING INBOARD TRAILING EDGE
(TYPICAL)
3021683
FIGURE 2: LEFT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES AND
STRUCTURE - DETAILED INSPECTION
(SHEET 1 OF 3)
Original Issue: July 14, 2023
737-27A1325 RB
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.  20 of 29

### Page 21 (OCR)

REQUIREMENTS BULLETIN 737-27A1325
ALERT  ALERT
W STA
151
SPOILER CONTROL  VIEW LOOKING FORWARD
WIRE BUNDLES  A-A
W STA  W STA
SPOILER CONTROL  202  199
WIRE BUNDLES
alo
VIEW LOOKING FORWARD
DETAILED INSPECTION  B-B
FIGURE 2: LEFT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES AND
STRUCTURE - DETAILED INSPECTION
(SHEET 2 OF 3)
Original Issue: July 14, 2023
737-27A1325 RB
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.  21 of 29

### Page 22

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY
numbers shown below are the number of parts necessary for this figure.
More DataQtyIdentificationNameTaskStep
(a)--WIRE BUNDLEInspect1
(a) Do a Detailed Inspection of the spoiler control wire bundle(s) and adjacent structure for any chafing
damage.
FIGURE 2: LEFT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES AND
STRUCTURE - DETAILED INSPECTION
(SHEET 3 OF 3)
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 14, 2023
737-27A1325 RB
22 of 29
REQUIREMENTS BULLETIN 737-27A1325
ALERTALERT

### Page 23 (OCR)

REQUIREMENTS BULLETIN 737-27A1325
ALERT  ALERT
RIGHT WING INBOARD TRAILING EDGE
(TYPICAL)
3021791
FIGURE 4: RIGHT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES - CLEARANCE
MEASUREMENT
(SHEET 1 OF 4)
Original Issue: July 14, 2023
737-27A1325 RB
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.  23 of 29

### Page 24 (OCR)

REQUIREMENTS BULLETIN 737-27A1325
ALERT  ALERT
W STA
151
VIEW LOOKING FORWARD  SPOILER CONTROL
A-A  WIRE BUNDLES
W STA  199  W STA  202  SPOILER CONTROL
WIRE BUNDLES
CLEARANCE  VIEW LOOKING FORWARD  3021792
MEASUREMENT AREA  B-B
FIGURE 4: RIGHT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES - CLEARANCE
MEASUREMENT
(SHEET 2 OF 4)
Original Issue: July 14, 2023
737-27A1325 RB
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.  24 of 29

### Page 25 (OCR)

REQUIREMENTS BULLETIN 737-27A1325
ALERT  ALERT
ADJACENT
STRUCTURE
- 0.5 -  - 0.5 -  - 0.5  • 0.5 -
SPOILER CONTROL
WIRE BUNDLES
CLAMP
TYPICAL
C-C
1 WITHIN 0.5 INCH OR LESS FROM CLAMP EDGES, CLEARANCE BETWEEN WIRE
BUNDLE AND ADJACENT STRUCTURE IS GREATER THAN OR EQUAL TO 0.13 INCH.
2 GREATER THAN 0.5 INCH FROM CLAMP EDGES, CLEARANCE BETWEEN WIRE
BUNDLE AND ADJACENT STRUCTURE IS GREATER THAN OR EQUAL TO 0.25 INCH.
3021750
FIGURE 4: RIGHT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES - CLEARANCE
MEASUREMENT
(SHEET 3 OF 4)
Original Issue: July 14, 2023
737-27A1325 RB
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.  25 of 29

### Page 26

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY
numbers shown below are the number of parts necessary for this figure.
More DataQtyIdentificationNameTaskStep
(a)--CLEARANCEMeasure1
(a) Clearance requirements:
a. Within 0.5 inch or less from clamp edges, clearance between wire bundle and adjacent structure
is greater than or equal to 0.13 inch.
b. Greater than 0.5 inch from clamp edges, clearance between wire bundle and adjacent structure is
greater than or equal to 0.25 inch.
FIGURE 4: RIGHT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES - CLEARANCE
MEASUREMENT
(SHEET 4 OF 4)
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 14, 2023
737-27A1325 RB
26 of 29
REQUIREMENTS BULLETIN 737-27A1325
ALERTALERT

### Page 27 (OCR)

REQUIREMENTS BULLETIN 737-27A1325
ALERT  ALERT
RIGHT WING INBOARD TRAILING EDGE
(TYPICAL)
3021797
FIGURE 5: RIGHT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES AND
STRUCTURE - DETAILED INSPECTION
(SHEET 1 OF 3)
Original Issue: July 14, 2023
Export Controlled ECCN: 9E991  737-27A1325 RB
Copyright © Unpublished Work - See page 1 for details.  27 of 29

### Page 28 (OCR)

REQUIREMENTS BULLETIN 737-27A1325
ALERT  ALERT
W STA
151
VIEW LOOKING FORWARD  SPOILER CONTROL
A-A  WIRE BUNDLES
W STA  199  W STA  202  SPOILER CONTROL
WIRE BUNDLES
VIEW LOOKING FORWARD  3021799
DETAILED INSPECTION  B-B
FIGURE 5: RIGHT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES AND
STRUCTURE - DETAILED INSPECTION
(SHEET 2 OF 3)
Original Issue: July 14, 2023
737-27A1325 RB
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.  28 of 29

### Page 29

The step numbers shown below agree with the numbers shown in the circle symbols in the figure. The QTY
numbers shown below are the number of parts necessary for this figure.
More DataQtyIdentificationNameTaskStep
(a)--WIRE BUNDLEInspect1
(a) Do a Detailed Inspection of the spoiler control wire bundle(s) and adjacent structure for any chafing
damage.
FIGURE 5: RIGHT WING INBOARD TRAILING EDGE - SPOILER CONTROL WIRE BUNDLES AND
STRUCTURE - DETAILED INSPECTION
(SHEET 3 OF 3)
Export Controlled ECCN: 9E991
Copyright © Unpublished Work - See page 1 for details.
Original Issue: July 14, 2023
737-27A1325 RB
29 of 29
REQUIREMENTS BULLETIN 737-27A1325
ALERTALERT

---
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