Airbus A318 A319 A320 A321 Service Bulletin A320-25-1CLH – Airspace Large Bins & Cabin Adaptation Manual

Description

Airbus A320-25-1CLH Service Bulletin – Airspace Large Bins Installation & Cabin Adaptation

This Airbus Service Bulletin covers the Equipment/Furnishings modification that installs Airspace Large Bins and adapts the cabin for an A320 aircraft. It belongs to ATA System 25 (Equipment/Furnishings) and is issued for the A318, A319, A320, and A321 family, with applicability focused on the A320-251N. The document provides the work required to replace existing overhead stowage compartments with Airspace Large Bins, adapt cabin furnishings, and modify existing systems so the new OHSCs can be installed.

The bulletin is written for the operators listed in the applicability section and can be adapted for other operators through the RFC/RMO procedure. It also ties into a vendor service bulletin from BE AEROSPACE SYSTEMS GMBH (D1379) VSB 1XCXX-0009-35-007, which modifies the oxygen containers to change the mask drop point.

File Details

• Manual type: Airbus Service Bulletin (SB)
• Brand: Airbus
• Document number: A320-25-1CLH
• ATA System: 25 (Equipment/Furnishings)
• Revision: REV 00, Apr 17/26
• Language: English
• Page count: 357
• File format: PDF

Chapters & Work Packages Covered

This Airbus Service Bulletin is organized around a series of numbered work packages. Each one handles a specific cabin zone or system, and the tasks are not always listed in the same sequence as the actual work steps. The Master Drawing List in the appendix gives the recommended sequence.

• Work Package 11-30 – Install the Placards in the Cabin
• Work Package 21-20 – Modify the Installation of the Air-Conditioning Distribution Ducts in the FWD Cabin
• Work Package 21-20 – Modify the Installation of the Air-Conditioning Distribution Ducts in the Cabin
• Work Package 21-20 and 25-24 – Modify the Installation of the OHSCs in the Cabin
• Work Package 25-23 – Modify the Installation of the Door Frame Linings, Ceiling Panels, Cove Light Panels in the Cabin
• Work Package 25-25 – Modify the Installation of the Passenger Service Channel in the Cabin
• Work Package 25-25 – Modify the Oxygen Containers
• Work Package 25-26 – Modify the Installation of the Curtains in the Cabin
• Work Package 25-60 – Modify the Installation of the Emergency Equipment in the Cabin
• Work Package 53-90 – Modify the Installation of the Brackets in the Cabin
• Work Package 92-20 – Install the Electrical Conduit in the Cabin
• Work Package 92-30 – Modify the Installation of the Electrical Equipment in the Cabin
• Work Package 92-40 – Modify the Installation of the Brackets in the Cabin
• No Kit – Remove the Parts from the Cabin
• No Kit – Remove the Parts from the FWD Cabin

Beyond the work packages, this service bulletin also carries the full administrative and technical support material that a maintenance planner and technician need to accomplish the modification. That includes task set A320-A-25-XX-1CLH-01000-93AA-A Modification, planning information with applicability by MSN and configuration, concurrent requirements, reason and history, manpower estimates, weight and balance data, electrical load changes, references to AMM tasks, and a complete material price information listing broken down by configuration.

Configurations and Applicability

The document is split into eight configurations (CONF 001 through CONF 008), each with its own modification classification and applicability list. Each configuration describes the specific pre-SB status of the related aircraft and identifies which modification numbers are retrofitted. The modification numbers involved are 176242K40155, 176243K40156, and 176241K40154, distributed across the eight configurations.

Applicability is defined at the model level (320-251N) and by MSN. The MSN list spans 07887 through 12289, assigned to configurations as follows:

• CONF 001: MSN 11213, 11219, 11226, 11283, 11459, 11584, 11654, 11685, 11714, 11847, 11912, 12100, 12169, 12173, 12289
• CONF 002: MSN 11140
• CONF 003: MSN 11019, 11041
• CONF 004: MSN 10781, 10802, 10842
• CONF 005: MSN 10677, 10691, 10693
• CONF 006: MSN 10136, 10172, 10313, 10342, 10409, 10459, 10482, 10487, 10570
• CONF 007: MSN 08889, 08938, 09041
• CONF 008: MSN 07887, 07928, 08096, 08170, 08240, 08280, 08300

Concurrent Requirements

This service bulletin cannot be accomplished on its own. The document lists several prerequisite or simultaneous service bulletins that must already be done or done at the same time:

• SB A320-53-1557 – Fuselage / Attach Fittings / Modify Y Fittings Installed Above STR 11 LH and RH in Center Fuselage – required for the full MSN list above
• SB A320-23-1B20 – Communications / CIDS / Install Integrated Pre-Recorded Announcement Module (IPRAM) Gold Card and Replace CAM – required on MSN 07887, 08170, 08240, 08280, 08300, 08889, 08938, 10136, 10172, 10313, 10342, 10409, 10459, 10482, 10487, 10570, 10677, 10691, 10693, 10781, 10802, 10842, 11019, 11041, 11140, 11213, 11219, 11226, 11283, 11459, 11584, 11654, 11685, 11714, 11847, 11912, 12100, 12169, 12173, 12289
• SB A320-23-1B54 – Communications / CIDS / Install Integrated Pre-Recorded Announcement Module (IPRAM) Gold Card and Replace CAM – required on MSN 07928, 08096, 09041

There is also a vendor service bulletin, Ref. BE AEROSPACE SYSTEMS GMBH (D1379) VSB 1XCXX-0009-35-007, which is referenced for the oxygen container modification.

Manpower Estimates

The manpower estimates in this service bulletin reflect direct labor cost to do the work, assuming experienced personnel, and do not include time to prepare, plan, or inspect the work, or time for parts procurement, paint drying, or general administration.

• CONF 001: 266.50 man-hours
• CONF 002, 003, 004: 268.50 man-hours
• CONF 005, 006, 007, 008: 265.50 man-hours

Additional man-hours apply for the vendor SB work on the oxygen containers.

Weight and Balance Data

The document includes weight and balance estimates for the A320-200N based on Manufacturer’s Empty Weight (MEW), excluding operator items. The impact varies by configuration:

• CONF 001: +192.414 kg (+424.196 lb), balance effect +3829.509 kg.m
• CONF 002, 004: +190.336 kg (+419.615 lb), balance effect +3800.939 kg.m
• CONF 003, 005, 006: +194.949 kg (+429.785 lb), balance effect +3937.098 kg.m
• CONF 007: +189.743 kg (+418.307 lb), balance effect +3815.763 kg.m
• CONF 008: +189.583 kg (+417.955 lb), balance effect +3814.612 kg.m

The bulletin recommends re-weighing the aircraft after accomplishment if operator items have been permanently removed or installed.

Electrical Load Changes

For configurations 003 and 005 through 008, the document lists alternating current (AC) load changes from new or modified circuit breakers feeding cabin lighting systems. These include circuit breakers such as 300LG, 301LG, 302LG, 303LG, 304LG, 305LG, 306LG, and 307LG, with nominal power differential values ranging from +66 VA up to +107 VA depending on the circuit. Direct current (DC) load is not changed. Each circuit is marked as sheddable and not clipped, and the values apply across all flight configurations from ground to taxi.

Structure of the Accomplishment Instructions

The accomplishment instructions begin with task set A320-A-25-XX-1CLH-01000-93AA-A Modification and are organized into preparation, procedure, preparation for test, test, close-up, and administrative phases. Preparation covers job set-up and aircraft/system configuration, including electrical grounding, seat removal, and removal of ceiling panels, cove light panels, upper sidewall panels, and lower sidewall (dado) panels. The procedure phase then works through each work package, from placard installation through to the electrical bracket modifications.

Testing includes an operational test of cabin systems (individual air outlets, cabin signs, area call panels, serviceable survival ELT, megaphone, ceiling lights, passenger cabin lights, reading lights, lavatory occupied signs, emergency exit signs, manual mask release, and entrance/window/ceiling lights), a BITE test of the CIDS and SDF, a post-installation test of the OHSC, and a leak test of the air-conditioning distribution ducts. Close-up covers reinstallation of all the removed cabin panels and seats and returning the aircraft to its initial configuration.

Material and Part Kit Information

The material section lists part kits and equipment by configuration. The part kits are grouped into two families: the 251CLHA series (ducts, braids, screws, washers, fittings, nuts, bolts, brackets, rivets, spacers, tie-cables, sleeves) and the 251CLHD series, which is much larger and covers compartments, endcaps, panels, plates, spacers, sections, fasteners, leads, tubes, rail, ring, brackets, clamps, placards, tie-cables, bases, hoses, retainers, and other cabin hardware. Equipment items include the compartments themselves.

The document also includes lists of referenced tools, consumables (primers, top coats, threadlocking adhesive, polysulfide sealants, silicone adhesive sealant, and copper wire), referenced consumables, re-identified parts, and interchangeable parts. The re-identified parts tables show how part numbers change as a result of the accomplishment, including the oxygen container assemblies, brackets, and compartment assemblies.

What This Service Bulletin Enables You to Do

For an operator, planner, or technician working on an affected A320, this document gives you the complete Airbus procedure for the Airspace Large Bins retrofit and the associated cabin adaptation. The covered models – A318, A319, A320, and A321 – share the same cabin architecture, and the document’s work package structure walks through every zone that needs to be touched: placards, ducting, overhead stowage compartments, door frame linings, ceiling and cove light panels, the passenger service channel, curtains, emergency equipment, brackets, electrical conduit and equipment, and oxygen containers.

The value of working from this document is precision. Airbus service bulletins define the allowable configuration at the point of accomplishment, and this one includes the concurrent service bulletins that must already be done, the vendor SB that handles the oxygen container modification, the weight and balance impact for each configuration, the AC electrical load changes by circuit breaker, and the exact part kits assigned to each configuration. Working from the correct revision ensures the OHSC installation, duct modification, and cabin panel adaptation all line up with the aircraft’s pre-SB status.

The PDF is delivered instantly after purchase, so there is no shipping delay and no physical media to wait for. You can open it on a laptop, tablet, or phone, search across the 357 pages, and print whatever sections you need for the shop floor. Whether you are preparing the work package ahead of a heavy check or referencing the material lists while staging parts, the file is available the moment payment completes.

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