DOC AIRBUS | AMM A320FACCESS COVERS - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
1. General
Access holes in the outer wing are closed by:
** ON A/C NOT FOR ALL Access holes in the outer wing are closed by:
- access panels
- door panels
- cover plates.
2. Component Description
A. Access Panels
There are 21 access panels installed in the wing bottom skin. These are of ten types: Type 23R, 24, 25, 25A, 27, 27A, 28, 29, 29A and 30 (Ref. Table).
The access panels inboard of RIB13 are attached by bolts which go through a clamp ring into blind nuts installed on the panel. These are non load-bearing access panels.
The access panels outboard of RIB13 are load-bearing. They are attached by bolts which go through the panel into fixed nuts installed on the bottom wing skin.
There are 21 access panels installed in the wing bottom skin. These are of ten types: Type 23R, 24, 25, 25A, 27, 27A, 28, 29, 29A and 30 (Ref. Table).
The access panels inboard of RIB13 are attached by bolts which go through the access door outer into blind nuts installed on the access door assembly. These are non load-bearing access doors.
The access panels outboard of RIB13 are load-bearing. They are attached by bolts which go through the panel into fixed nuts installed on the bottom wing skin.
There are 21 access holes in the bottom skin which are closed with access panels. The access holes are forward of the rear spar, between ribs RIB2 and RIB27.
There are 10 types of access panel used on the outer wing. They are installed as follows:
The access panels inboard of RIB13 are attached by bolts which go through the access door outer into blind nuts installed on the access door assembly. These are non load-bearing access doors.
The access panels outboard of RIB13 are load-bearing. They are attached by bolts which go through the panel into fixed nuts installed on the bottom wing skin.
Access Panels - Type and LocationThere are 21 access panels installed in the wing bottom skin. These are of ten types: Type 23R, 24, 25, 25A, 27, 27A, 28, 29, 29A and 30 (Ref. Table).
| ------------------------------------------------------------------------------- |
| Location Panel Type Material Remarks |
| ------------------------------------------------------------------------------- |
| Rib 2-13 23R, 24 Titanium alloy |
| (super plastic |
| formed) |
| ------------------------------------------------------------------------------- |
| Rib 13-22 25, 25A, 27, Aluminum alloy 25A has an Over-Pressure |
| 27A Protector (Ref. 28-12-00) |
| 27 has a Manual Magnetic |
| Indicator (Ref. 28-43-00) |
| ------------------------------------------------------------------------------- |
| Rib 22-27 28, 29, 29A, Aluminum alloy 28 has a NACA vent intake |
| 30 (Ref. 28-12-00) |
| 29A has an Over-Pressure |
| Protector (Ref. 28-12-00) |
| ------------------------------------------------------------------------------- |
The access panels outboard of RIB13 are load-bearing. They are attached by bolts which go through the panel into fixed nuts installed on the bottom wing skin.
There are 21 access panels installed in the wing bottom skin. These are of ten types: Type 23R, 24, 25, 25A, 27, 27A, 28, 29, 29A and 30 (Ref. Table).
| ------------------------------------------------------------------------------- |
| Location Panel Type Material Remarks |
| ------------------------------------------------------------------------------- |
| Rib 2-13 23R, 24 Aluminum alloy |
| ------------------------------------------------------------------------------- |
| Rib 13-22 25, 25A, 27, Aluminum alloy 25A has an Over-Pressure |
| 27A Protector (Ref. 28-12-00) |
| 27 has a Manual Magnetic |
| Indicator (Ref. 28-43-00) |
| ------------------------------------------------------------------------------- |
| Rib 22-27 28, 29, 29A, Aluminum alloy 28 has a NACA vent intake |
| 30 (Ref. 28-12-00) |
| 29A has an Over-Pressure |
| Protector (Ref. 28-12-00) |
| ------------------------------------------------------------------------------- |
The access panels outboard of RIB13 are load-bearing. They are attached by bolts which go through the panel into fixed nuts installed on the bottom wing skin.
There are 21 access holes in the bottom skin which are closed with access panels. The access holes are forward of the rear spar, between ribs RIB2 and RIB27.
There are 10 types of access panel used on the outer wing. They are installed as follows:
| ----------------------------------------------------------------------------- |
| Location Panel Type Material Remarks |
| ----------------------------------------------------------------------------- |
| RIBS 2- 9 23R Aluminum alloy |
| 9-13 24 Aluminum alloy |
| 13-17 25 Aluminum alloy |
| 17-19 27 Aluminum alloy |
| 19-20 27B Aluminum alloy Pressure relief outlet |
| 20-21 27C Aluminum alloy Magnetic level indicator |
| 21-22 27 Aluminum alloy Magnetic level indicator |
| 22-23 28 Naca vent intake |
| 23-24) 29 Aluminum alloy |
| and 25-26) |
| 24-25 29A Aluminum alloy Pressure relief outlet |
| 26-27 30 Aluminum alloy |
| --------------------------------------------------------------------------- |
| Table 001 |
The access panels outboard of RIB13 are load-bearing. They are attached by bolts which go through the panel into fixed nuts installed on the bottom wing skin.
B. Door Panels
There are two door panels on the inboard face of RIB2/STA700, which are hinged at their top edge. The panels are spring loaded to the closed position, but allow fuel to flow inboard.
The panels and brackets are machined from aluminum alloy, the springs are made of steel and these have seals made of nitrile rubber.
Two door panels are installed on the inboard face of RIB2. They close the access holes between the integral fuel tank and the collector cell. The door panels are machined from aluminum alloy. They hang from hinges at their top edge, so that they turn inboard to open, and use spring pressure to go back to their closed position.
There are two door panels on the inboard face of RIB2/STA700, which are hinged at their top edge. The panels are spring loaded to the closed position, but allow fuel to flow inboard.
The panels and brackets are machined from aluminum alloy, the springs are made of steel and these have seals made of nitrile rubber.
Two door panels are installed on the inboard face of RIB2. They close the access holes between the integral fuel tank and the collector cell. The door panels are machined from aluminum alloy. They hang from hinges at their top edge, so that they turn inboard to open, and use spring pressure to go back to their closed position.
C. Cover Plates
There are two cover plate assemblies installed on the front spar. They are between RIB 7 and RIB 5. Each assembly has an aluminum alloy outer and inner cover plate with a seal.
There are two cover plates installed on the front spar, between ribs RIB5 and RIB7. The cover plates are made as assemblies, each with aluminum alloy inner and outer plates, and a seal. They close the access holes into the dry bays.
There are two cover plate assemblies installed on the front spar. They are between RIB 7 and RIB 5. Each assembly has an aluminum alloy outer and inner cover plate with a seal.
There are two cover plates installed on the front spar, between ribs RIB5 and RIB7. The cover plates are made as assemblies, each with aluminum alloy inner and outer plates, and a seal. They close the access holes into the dry bays.