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CUSTOMER SERVICES DIRECTORATE 2 ROND POINT EMILE DEWOITINE 31700 BLAGNAC FRANCE TELEPHONE + 33 (0)5 61 93 33 33
ALERT OPERATORS TRANSMISSION - AOT AOT ref: A52N014-22 Rev 01 Page 1 of 40 Date: 19-APR-2022 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2022. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT SUBJECT: ATA 52 – A321NEO ACF overwing emergency exit slide release cable disconnected AIRCRAFT TYPE: A321-200NX OUR REF.: A52N014-22 Rev 01 dated 19-APR-2022 OUR PREVIOUS REF.: A52N014-22 Rev 00 dated 21-MAR-2022 EFFECTIVITY DATE: 31-Mar-2022
0. REASON FOR REVISION:
AOT A52N014-22 Rev 00 was originally issued to recommend a one-time inspection of the A321NEO ACF overwing emergency exit slide release mechanism installation.
AOT A52N014-22 Rev 01: Airbus has detected that 9 A/C are not equipped with an Additional Center Tank (ACT) from production but they have instead been delivered with the provision for a possible future installation as per Mod 161927. As part of the ACT provision definition, Mod 161974 is automatically embodied for relocation of the emergency exit slide inflation reservoirs from the AFT (afterward) cargo compartment area into the cabin.
These 9 A/C were therefore listed in the Configuration 001 (inflation reservoir in the AFT cargo area) in the AOT A52N014-22 Rev 00 whereas they should have been listed in the Configuration 002 (inflation reservoir in the cabin).
The list of MSNs in both configurations and the description of both configurations have therefore been updated in the revision 01 of subject AOT.
The revised paragraphs are indicated between **BEG. REV** and **END REV**.
1. AIRCRAFT AFFECTED A321NEO ACF (Airbus Cabin Flex) with the following MSNs:
08155, 08257, 08314, 08369, 08386, 08421, 08454, 08469, 08496, 08508, 08517, 08526, 08542, 08557, 08567, 08573, 08587, 08593, 08608, 08617, 08629, 08637, 08647, 08655, 08666, 08701, 08710, 08712, 08714, 08718, 08727, 08732, 08735, 08740, 08750, 08755, 08758, 08761, 08768, 08773, 08780, 08783, 08794, 08796, 08799, 08800, 08804, 08813, 08814, 08816, 08823, 08830, 08834, 08837, 08839, 08861, 08866, 08876, 08878, 08882, 08887, 08893, 08897, 08898, 08906, 08908, 08909, 08910, 08919, 08921, 08923, 08930, 08936, 08941, 08946, 08952, 08955, 08957, 08958, 08965, 08966, 08968, 08971, 08979, 08980, 08984, 08989, 08992, 08993, 08997, 09000, 09008, 09011, 09016, 09042, 09044, 09046, 09048, 09054, 09055, 09059, 09063, 09073, 09076, 09080, 09082, 09083, 09087, 09090, 09092, 09095, 09106, 09109, 09112, 09120, 09121, 09123, 09131, 09134, 09138, 09139, 09145, 09147, 09150, 09151, 09156, 09157, 09162, 09164, 09168, 09178, 09187, 09191, 09195, 09196, 09198, 09204, 09208, 09209, 09210, 09214, 09217, 09224, 09226, 09227, 09228, 09230, 09234, 09236, 09240, 09243, 09245, 09248, 09254, 09255, 09258, 09263, 09265, 09266, 09267, 09278, 09281, 09284, 09285, 09288, 09289, 09293, 09297, 09298, 09299, 09301, 09302, 09308, 09310, 09311, 09314, 09315, 09318, 09325, 09326, 09333, 09336, 09347, 09349, 09359, 09364, 09365, 09366, 09368, 09374, 09376, 09377, 09383, 09386, 09396, 09398, 09399, 09401, 09408, 09415, 09417, 09419, 09422, 09427, 09429, 09432, 09433, 09436, 09441, 09443, 09444, 09445, 09452, 09458, 09462, 09466, 09468, 09472, 09477, 09478, 09487, 09492, 09495, 09496, 09499, 09503, 09509, 09512, 09513, 09515, 09524, 09537, 09539, 09541, 09550, 09553, 09556, 09560, 09564, 09567, 09571, 09575, 09584, 10000, 10007, 10010, 10017, 10020, 10025, 10029, 10032, 10036, 10042, 10050, 10054, 10056, 10059, 10068, 10071, 10074, 10077, 10084, 10091, 10095, 10099, 10101, 10105, 10109, 10115, 10116, 10120, 10124, 10125, 10130, 10141, 10143, 10147, 10150, 10151, 10155, 10157, 10159, 10162, 10168, 10169, 10171, 10173, 10174, 10176, 10181, 10184, 10189, 10190, 10191, 10193, 10195, 10198, 10199, 10205, 10206, 10210, 10211, 10213, 10214, 10217, 10218, 10221, 10222,
ALERT OPERATORS TRANSMISSION - AOT AOT ref: A52N014-22 Rev 01 Page 2 of 40 Date: 19-APR-2022 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2022. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT 10224, 10227, 10228, 10229, 10235, 10238, 10240, 10244, 10245, 10254, 10256, 10257, 10259, 10260, 10264, 10266, 10267, 10270, 10273, 10276, 10280, 10282, 10283, 10287, 10289, 10291, 10294, 10295, 10296, 10299, 10303, 10304, 10305, 10306, 10311, 10312, 10314, 10318, 10319, 10321, 10322, 10323, 10329, 10333, 10336, 10340, 10341, 10343, 10345, 10346, 10347, 10351, 10354, 10357, 10358, 10364, 10367, 10369, 10370, 10371, 10375, 10377, 10381, 10382, 10385, 10387, 10389, 10391, 10393, 10395, 10396, 10401, 10403, 10405, 10406, 10408, 10412, 10416, 10417, 10418, 10421, 10422, 10424, 10427, 10428, 10438, 10440, 10445, 10446, 10456, 10457, 10460, 10466, 10472, 10474, 10476, 10479, 10480, 10483, 10484, 10490, 10494, 10496, 10497, 10499, 10501, 10509, 10511, 10513, 10515, 10519, 10521, 10522, 10523, 10526, 10532, 10540, 10551, 10564, 10566, 10583, 10585, 10595, 10597, 10609, 10613, 10619, 10623, 10626, 10628, 10641, 10643, 10649, 10651, 10654, 10659, 10684, 10688, 10699, 10709, 10730, 10757, 10805, 10822 MSN by Configuration:
**BEG. REV** Note: The 9 A/C that have been moved from Conf 001 to Conf 002 in the AOT Revision 01 are highlighted in bold blue.
CONF 001 – MSNs of the impacted aircraft (A/C) without Additional Center Tank (ACT) and without provision for ACT 8155, 8257, 8314, 8369, 8386, 8421, 8454, 8469, 8496, 8508, 8526, 8542, 8573, 8608, 8617, 8629, 8637, 8712, 8718, 8727, 8732, 8735, 8740, 8761, 8783, 8794, 8799, 8804, 8813, 8814, 8816, 8839, 8878, 8882, 8906, 8908, 8919, 8921, 8930, 8936, 8941, 8957, 8958, 8966, 8979, 8984, 8993, 8997, 9000, 9008, 9011, 9044, 9046, 9059, 9076, 9082, 9087, 9090, 9092, 9095, 9109, 9123, 9138, 9139, 9147, 9150, 9157, 9162, 9164, 9168, 9196, 9204, 9208, 9209, 9210, 9214, 9217, 9227, 9228, 9236, 9240, 9248, 9254, 9258, 9266, 9267, 9281, 9284, 9285, 9288, 9298, 9299, 9301, 9310, 9314, 9325, 9326, 9333, 9336, 9347, 9349, 9365, 9366, 9368, 9376, 9396, 9399, 9401, 9415, 9417, 9422, 9429, 9436, 9441, 9443, 9444, 9452, 9462, 9468, 9472, 9478, 9487, 9495, 9496, 9503, 9509, 9512, 9515, 9524, 9553, 9556, 9564, 9567, 9571, 10000, 10007, 10010, 10025, 10036, 10050, 10054, 10056, 10059, 10068, 10071, 10077, 10084, 10091, 10099, 10105, 10109, 10115, 10116, 10124, 10125, 10130, 10143, 10147, 10151, 10155, 10168, 10171, 10173, 10174, 10189, 10190, 10191, 10199, 10205, 10210, 10211, 10217, 10221, 10222, 10224, 10227, 10229, 10240, 10244, 10257, 10259, 10260, 10266, 10267, 10270, 10273, 10276, 10280, 10283, 10289, 10295, 10296, 10304, 10305, 10312, 10318, 10321, 10322, 10323, 10333, 10336, 10340, 10341, 10343, 10345, 10346, 10347, 10351, 10354, 10357, 10364, 10367, 10369, 10370, 10371, 10375, 10381, 10382, 10389, 10391, 10393, 10401, 10406, 10417, 10422, 10424, 10438, 10440, 10445, 10456, 10460, 10466, 10479, 10480, 10484, 10490, 10496, 10497, 10501, 10509, 10515, 10522, 10523, 10526, 10532, 10551, 10583, 10585, 10651, 10654, 10659, 10688, 10699, 10730, 10757, 10805, 10822 CONF 002 - MSNs of the impacted aircraft (A/C) with Additional Center Tank (ACT) and / or with provision for ACT 8517, 8557, 8567, 8587, 8593, 8647, 8655, 8666, 8701, 8710, 8714, 8750, 8755, 8758, 8768, 8773, 8780, 8796, 8800, 8823, 8830, 8834, 8837, 8861, 8866, 8876, 8887, 8893, 8897, 8898, 8909, 8910, 8923, 8946, 8952, 8955, 8965, 8968, 8971, 8980, 8989, 8992, 9016, 9042, 9048, 9054, 9055, 9063, 9073, 9080, 9083, 9106, 9112, 9120, 9121, 9131, 9134, 9145, 9151, 9156, 9178, 9187, 9191, 9195, 9198, 9224, 9226, 9230, 9234, 9243, 9245, 9255, 9263, 9265, 9278, 9289, 9293, 9297, 9302, 9308, 9311, 9315, 9318, 9359, 9364, 9374, 9377, 9383, 9386, 9398, 9408, 9419, 9427, 9432, 9433, 9445, 9458, 9466, 9477, 9492, 9499, 9513, 9537, 9539, 9541, 9550, 9560, 9575, 9584, 10017, 10020, 10029, 10032, 10042, 10074, 10095, 10101, 10120, 10141, 10150, 10157, 10159, 10162, 10169, 10176, 10181, 10184, 10193, 10195, 10198, 10206, 10213, 10214, 10218, 10228, 10235, 10238, 10245, 10254, 10256, 10264, 10282, 10287, 10291, 10294, 10299, 10303, 10306, 10311, 10314, 10319, 10329, 10358, 10377, 10385, 10387, 10395, 10396, 10403, 10405, 10408, 10412, 10416, 10418, 10421, 10427, 10428, 10446, 10457, 10472, 10474, 10476, 10483, 10494, 10499, 10511, 10513, 10519, 10521, 10540, 10564, 10566, 10595, 10597, 10609, 10613, 10619, 10623, 10626, 10628, 10641, 10643, 10649, 10684, 10709
ALERT OPERATORS TRANSMISSION - AOT AOT ref: A52N014-22 Rev 01 Page 3 of 40 Date: 19-APR-2022 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2022. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT **END REV**
2. REFERENCED DOCUMENTATION
2.1 APPENDIX Appendix 1: Inspection flowchart for Inspection Method 1 Appendix 2: Inspection flowchart for Inspection Method 2 Appendix 3: Inspection reporting form
2.2 REFERENCES Ref.[1] AMM TASK 25-62-43-400-003-A - Installation of the Emergency Escape-Slide Release- Mechanism Assembly Ref.[2] AMM TASK 25-62-43-400-001-A - Installation of the Flexible Control Assembly Ref.[3] AMM TASK 25-62-00-481-001-A - Do the special precautions before you do work on the offwing escape-slide systems Ref.[4] AMM TASK 25-23-48-000-001-A or 25-23-48-000-001-B - Removal of the Cove Light Panel Ref.[5] AMM TASK 25-62-00-820-001-A - Adjustment Procedure to Install the Lock pin in the Regulator Valve Assembly of the Inflation Reservoir - Offwing Escape-Slide Ref.[6] AMM TASK 20-11-11-911-001-A - Safetying with Lockwire Ref.[7] AMM TASK 25-62-00-081-001-A - Special Precautions after You Do the Work on the Offwing /Emergency-Exit-Door Escape-Slide Systems Ref.[8] AMM TASK 25-23-48-400-001-A or 25-23-48-400-001-B - Installation of the Cove Light Panel Ref.[9] AMM TASK 25-24-41-000-001-A or 25-24-41-000-001-C - Removal of the Overhead Stowage Compartments (OHSC) Ref.[10] AMM TASK 25-24-41-400-001-A or 25-24-41-400-001-B - Installation of the Overhead Stowage Compartments (OHSC) Ref.[11] OIT 999.0018/16 – ATA 00 – PROCEDURE TO REPORT RESULTS OF INSPECTION
SERVICE BULLETINS AND ALERT OPERATORS TRANSMISSIONS Ref.[12] In-Service Information (ISI) 52.20.00011 - A321ACF overwing emergency exit slide release cable disconnected
3. REASON
3.1 FACTS Airbus informs operators that during an emergency slide deployment test on an A321NEO ACF overwing emergency exit, the slide did not deploy. During troubleshooting, it was identified that the slide release cable junction was found disconnected inside the surrounding collets and knurled sleeve nut (mushroom head connector not inserted into the T-slot cable joint), refer to figure 3.
3.2 HISTORY/BACKGROUND The A321NEO ACF are equipped with 2 slide release mechanisms for the overwing emergency exits, one for each side of the A/C. A cable connects the mechanical slide release mechanism which is located above the overwing emergency exits to a reservoir that triggers the inflation of the emergency slide.
The affected cable junction is located close to the reservoir which triggers the slide inflation.
**BEG. REV**
ALERT OPERATORS TRANSMISSION - AOT AOT ref: A52N014-22 Rev 01 Page 4 of 40 Date: 19-APR-2022 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2022. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT For A/C without ACT and without provision for ACT (CONF 001), the connection is located in the AFT (afterward) cargo compartment, refer to figure 1.
Fig.1 Location of the slide release mechanism junction for A/C not equipped with ACT and not equipped with provision for ACT For A/C with ACT and / or with provision for ACT (CONF 002), the cable junction is located in the cabin, refer to figure 2.
Fig.2 Location of the slide release mechanism junction for A/C equipped with ACT and / or equipped with provision for ACT **END REV** The mushroom head connector must be inserted in the T-slot cable joint as shown in figure 3:
ALERT OPERATORS TRANSMISSION - AOT AOT ref: A52N014-22 Rev 01 Page 5 of 40 Date: 19-APR-2022 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2022. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT Fig.3 Slide release cable junction illustration NOTE: An incorrect connection of the cable junction is not visually detectable without removal of the knurled sleeve nut and collets.
ALERT OPERATORS TRANSMISSION - AOT AOT ref: A52N014-22 Rev 01 Page 6 of 40 Date: 19-APR-2022 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2022. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT
3.3 ROOT CAUSE The investigation identified that the slide release cable junction was incorrectly installed during production.
3.4 INVESTIGATION Only A321NEO ACF A/C are impacted by this potential incorrect installation.
Following the in-service finding, a quality investigation was launched and all A/C in production have been inspected, leading to two additional findings.
The slide release cable junction must therefore be inspected to ensure the proper connection and reinstalled properly in case of finding.
Additionally, the lockwire securing the junction assembly was found missing twice on in-service doors and twice during the quality investigation on production A/C.
The lock wire that secures the knurled sleeve nut must be inspected after or during the check of the cable junction and properly installed if found missing.
The correct condition of the sleeve nut wire locking and of the slide release cable connection are shown in figure 4.
Fig.4 Correct installation of the slide release cable junction Airbus has put in place corrective actions to prevent reoccurrence: the instructions for installation of the slide release mechanism in production have been enhanced and testing performed at the end of the installation have been reinforced.
The AMM tasks for installation of the complete slide release mechanism Ref.[1] and for the installation of the flexible control assembly Ref.[2] have also been reviewed to make sure the instructions provided in these AMM tasks are clear and could not lead to an incorrect installation after an in-service maintenance.
ALERT OPERATORS TRANSMISSION - AOT AOT ref: A52N014-22 Rev 01 Page 7 of 40 Date: 19-APR-2022 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2022. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT
3.5 CONSEQUENCES In case of disconnected slide release cable, the slide will not be available in case of emergency evacuation. Neither the automatic release nor the manual release will function without a mechanical connection to the slide inflation valve and reservoir.
There is a risk of having both overwing emergency exit slides unavailable during an emergency evacuation. In such case, the cabin crew has to redirect the passengers to alternative emergency exits, increasing the time required to evacuate all the passengers from the A/C.
4. OBJECTIVES OF THIS AOT This AOT recommends a one-time inspection the installation of the A321NEO ACF overwing emergency exit slide release mechanism.
5. MAINTENANCE PROCEDURE NOTE: This AOT is classified mandatory or expected to be classified mandatory by an Airworthiness Directive (AD). If the instructions of this AOT are marked as Required for Compliance (RC), the operator must follow the instructions as indicated. These instructions are introduced by “in accordance with”.
NOTE: The instructions of this AOT include procedures given in other documents or in other sections of the AOT. If the instructions of this AOT are NOT marked as Required for Compliance (RC), the operator can use an alternative procedure accepted by his/her local authority. These instructions are introduced by “refer to”.
NOTE: When this AOT gives the access or close-up instructions with no return to service tests, the operator can adapt these instructions to add flexibility to the maintenance operations. The technical intent of this AOT must comply with the set parameters.
5.1 PLANNING – (RC) Perform the inspection in accordance with paragraphs 5.4 to 5.6 within four (4) months from AOT effective date on both Left Hand Side (LHS) and Right Hand Side (RHS) of the A/C.
If an incorrect connection of the slide release cable is detected during the inspection or the test of the slide release cable junction, the connection must be restored before next flight.
If the test or the inspection of the slide release cable connection is successful but the lockwire of the sleeve nut is found missing, the lockwire must be installed within the defined compliance of subject AOT (four (4) months from AOT effective date).
NOTE: If an offwing emergency escape slide has been successfully deployed on one side (LHS or RHS) of the A/C since the A/C delivery, the slide release mechanism on this side of the A/C does not require an inspection of the slide release cable junction but the inspection of the lockwire is still required.
Example:
Slide deployment test successfully performed through opening of 1 or 2 LHS overwing emergency exit(s): no need to inspect the slide release cable junction on the LHS, but the condition of the lockwire must be inspected.
ALERT OPERATORS TRANSMISSION - AOT AOT ref: A52N014-22 Rev 01 Page 8 of 40 Date: 19-APR-2022 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2022. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT
5.2 MANPOWER **BEG REV** CONF 001 – A/C without ACT and without provision for ACT 2 alternative Inspection Methods are possible for A/C without ACT and without provision for ACT. It is possible to perform either Inspection Method 1 or Inspection Method 2 to comply with subject AOT requirements.
If Inspection Method 1 is chosen, 2 people are required to perform the AOT instructions (one close to the slide release mechanism between the doors, one close to the inflation reservoir). They must be able to communicate during the inspection (using walkie-talkie for example).
Estimated required man/hours for Inspection Method 1 per A/C:
- Access and close-up: 1 man/hour
- Inspection: 0.5 man/hour
- Correction of the incorrect installation (if needed): 0.25 man/hour per side of the A/C (to be multiplied by 2 in case of findings on both sides of the A/C) If Inspection Method 2 is chosen, 1 person is required to perform the inspection.
Estimated required man/hours for Inspection Method 2 per A/C:
- Access and close-up: 1 man/hour
- Inspection: 0.25 man/hour
- Correction of the incorrect installation (if needed): 0.25 man/hour per side of the A/C (to be multiplied by 2 in case of findings on both sides of the A/C) CONF 002 – A/C with ACT and / or with provision for ACT 2 alternative Inspection Methods are possible for A/C with ACT and / or equipped with provision for ACT.
It is possible to perform either Inspection Method 1 or Inspection Method 2 to comply with subject AOT requirements.
If Inspection Method 1 is chosen, 2 people are required to perform the AOT instructions (one close to the slide release mechanism between the doors, one close to the inflation reservoir). They must be able to communicate during the inspection (using walkie-talkie for example).
Estimated required man/hours for Inspection Method 1 per A/C:
- Access and close-up: 1 man/hour
- Inspection: 0.5 man/hour
- Correction of the incorrect installation (if needed): 6 man/hours per side of the A/C (to be multiplied by 2 in case of findings on both sides of the A/C) If Inspection Method 2 is chosen, 2 people are required to perform the inspection.
Estimated required man/hours for Inspection Method 2 per A/C:
- Access and close-up: 13 man/hours
- Inspection: 0.5 man/hour
- Correction of the incorrect installation (if needed): 0.25 man/hour per side of the A/C (to be multiplied by 2 in case of findings on both sides of the A/C) **END REV**
ALERT OPERATORS TRANSMISSION - AOT AOT ref: A52N014-22 Rev 01 Page 9 of 40 Date: 19-APR-2022 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2022. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT
5.3 ACCESS **BEG REV** CONF 001 – A/C without ACT and without provision for ACT **END REV** NOTE: Both LHS and RHS slide release mechanisms of the A/C must be inspected.
NOTE: If an offwing emergency escape slide has been successfully deployed on one side (LHS or RHS) of the A/C since the A/C delivery, the slide release mechanism on this side of the A/C does not require an inspection of the slide release cable junction but the inspection of the lockwire is still required.
In such case, some of the following instructions for the access will not be required.
(1) Remove the handle flaps from all the activated overwing emergency exits and turn the slide release trigger to DISARMED position.
NOTE: Some A321ACF have 1 pair of overwing emergency exits deactivated.
(2) Do the special precautions before you do work on the offwing escape-slide systems Ref.[3] in order to ensure that the lock pin assembly (3) from the pocket (1) is installed in the regulator valve assembly (4) of the inflation reservoir (2), refer to figure 5.
ALERT OPERATORS TRANSMISSION - AOT AOT ref: A52N014-22 Rev 01 Page 10 of 40 Date: 19-APR-2022 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2022. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT Fig.5 Inflation reservoir in the AFT cargo area WARNING:
MAKE SURE THAT THE LOCK PIN IS CORRECTLY INSTALLED IN THE REGULATOR VALVE ASSEMBLY OF THE INFLATION RESERVOIR. THIS SAFETIES ALL COMPONENTS OF THE INFLATION SYSTEM IN OPERATION AND PREVENTS ACCIDENTAL:
- DISCHARGE OF THE INFLATION RESERVOIR
- DEPLOYMENT OF THE ESCAPE SLIDE WHICH CAN CAUSE INJURY AND/OR DAMAGE.
WARNING:
MAKE SURE THAT YOU TURN THE REGULATOR ASSEMBLY IN A CLOCKWISE DIRECTION OR IN THE DIRECTION OF THE BLACK MARK. WHEN YOU TURN THE REGULATOR ASSEMBLY IN THIS DIRECTION, THE VALVE CLOSES.
IF YOU DO NOT OBEY THIS INSTRUCTION, YOU WILL START AN UNWANTED DEPLOYMENT SEQUENCE.
THIS CAN CAUSE INJURY TO PERSONNEL AND DAMAGE TO EQUIPMENT.
CAUTION:
ESCAPE-SLIDE INFLATION RESERVOIR MAY INFLATE IF LOCK PIN IS NOT INSTALLED.
CAUTION:
ALERT OPERATORS TRANSMISSION - AOT AOT ref: A52N014-22 Rev 01 Page 11 of 40 Date: 19-APR-2022 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2022. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT
MAKE SURE TO AVOID ANY DAMAGE ON THE STRUCTURE, TO ANY SYSTEM OR TO THE INSULATION WHEN ACCESSING THE INFLATION RESERVOIR.
If an offwing emergency escape slide has been successfully deployed on one side (LHS or RHS) of the A/C since the A/C delivery, DO NOT perform step 3 for this side of the A/C, whatever the Inspection Method chosen to comply with the AOT inspection.
Otherwise:
If the Inspection Method 1 described in paragraph 5.6 is chosen to comply with the AOT inspection, perform step 3.
If the Inspection Method 2 described in paragraph 5.6 is chosen to comply with the AOT inspection, DO NOT perform step 3.
(3) Get access to the slide release mechanism highlighted in figure 6, between the overwing emergency exits, as follows:
(a) Remove the necessary cove light panels Ref.[4] NOTE: Subject step (3) is only required if Inspection Method 1 is chosen to perform the inspection. If Inspection Method 2 is chosen, it is not required to remove the cove light panel.
Fig.6 Slide release mechanism area
ALERT OPERATORS TRANSMISSION - AOT AOT ref: A52N014-22 Rev 01 Page 12 of 40 Date: 19-APR-2022 C80_AOT_FM1104649_v8.0 © AIRBUS S.A.S. 2022. ALL RIGHTS RESERVED. CONFIDENTIAL AND PROPRIETARY DOCUMENT **BEG REV** CONF 002 – A/C with ACT and / or with provision for ACT **END REV** NOTE: Both LHS and RHS slide release mechanisms of the A/C must be inspected.
NOTE: If an offwing emergency escape slide has been successfully deployed on one side (LHS or RHS) of the A/C since the A/C delivery, the slide release mechanism on this side of the A/C does not require an inspection of the slide release cable junction but the inspection of the lockwire is still required.
In such case, some of the following instructions for the access will not be required.
(1) Remove the handle flaps from all the activated overwing emergency exits and turn the slide release trigger to DISARMED position.
NOTE: Some A321ACF have 1 pair of overwing emergency exits deactivated.
(2) Get access to the applicable inflation reservoir(s) (4) as follows:
(a) Open the door(s) of the applicable Over Head Storage Compartment(s) (OHSC)
(b) Release the quick-release fasteners and remove the cover(s) from the applicable OHSC(s).
(3) Secure the inflation reservoir (4) as follows (refer to figure 7):
WARNING:
MAKE SURE THAT THE LOCK PIN IS CORRECTLY INSTALLED IN THE REGULATOR VALVE ASSEMBLY OF THE INFLATION RESERVOIR. THIS SAFETIES ALL COMPONENTS OF THE INFLATION SYSTEM IN OPERATION AND PREVENTS ACCIDENTAL:
- DISCHARGE OF THE INFLATION RESERVOIR
- DEPLOYMENT OF THE ESCAPE SLIDE WHICH CAN CAUSE INJURY AND/OR DAMAGE.
WARNING:
MAKE SURE THAT YOU TURN THE REGULATOR ASSEMBLY IN A CLOCKWISE DIRECTION OR IN THE DIRECTION OF THE BLACK MARK. WHEN YOU TURN THE REGULATOR ASSEMBLY IN THIS DIRECTION, THE VALVE CLOSES.
IF YOU DO NOT OBEY THIS INSTRUCTION, YOU WILL START AN UNWANTED DEPLOYMENT SEQUENCE.
THIS CAN CAUSE INJURY TO PERSONNEL AND DAMAGE TO EQUIPMENT.
(a) Remove the lock pin assembly (5) from the pocket (3).
(b) Install the lock pin assembly (5) in the regulator valve assembly (6).
CAUTION:
ESCAPE-SLIDE INFLATION RESERVOIR MAY INFLATE IF LOCK PIN IS NOT INSTALLED.
(c) If you cannot install the lock pin assembly (5) in the regulator valve assembly (6), do the adjustment procedure to install the lock pin assembly (5) Ref.[5].