1. Confirmer l’item, la catégorie et le nombre requis dans le MEL officiel (lien PDF).
2. Appliquer les procédures (O) et/ou (M) du MEL avant dispatch — texte officiel ci-dessous.
3. Placard (texte MEL) :
Apply sticker to Cargo Compartment Fire Detection/Suppression panel as appropriate.
4. Journey log / other instructions (texte MEL) :
Print the following information in the journey log sheet.
(FWD)(AFT) LOWER CARGO COMPT FIRE DETECTION/SUPPRESSION SYSTEM(S) INOP
or
(FWD)(AFT) LOWER CARGO COMPARTMENT (FUNCTION/LIGHT) INOP
5. Respecter toutes les restrictions du MEL — ne pas en inventer.
(O) OPERATIONS PROCEDURES — texte MEL :
26-19: Compartment Remains Empty
May be inoperative provided associated cargo compartment remains empty or carries only ballast
(bags made of glass fibre or Kevlar filled with sand or ingots of non-magnetic metals such as lead).
26-19-01-01: Forward or Aft fire detector loop inoperative
NOTE: If a Cargo Fire Panel FWD/AFT warning light does not illuminate during system test, one or
more detection loops for the associated cargo compartment is inoperative.
To determine the inoperative loop(s):
1. On the Cargo Fire Panel, position the FWD and AFT DET SELECT switch to A.
2. Press and hold Cargo Fire Panel TEST switch.
3. Verify that the following indications occur within 4 seconds.
a) Fire Bell sounds.
b) Both Master FIRE WARN lights illuminate.
c) Cargo Fire Panel FWD and AFT warning lights illuminate.
d) Cargo Fire Panel DISCH light illuminates.
e) Cargo Fire Panel EXT FWD and EXT AFT lights illuminate.
4. If one or more smoke detectors in Loop A is inoperative, the Cargo Fire Panel DETECTOR FAULT
light will illuminate and the associated FWD or AFT warning light will remain extinguished for the
cargo compartment with the inoperative detector.
5. Release the Cargo Fire Panel TEST switch. The DETECTOR FAULT light remains illuminated if a
loop failure is detected in either the forward or aft cargo compartment. Otherwise, all indications
will clear within half a second.
6. Position Cargo Fire Panel FWD and AFT DET SELECT switch to B and repeat the above test
(Steps 2 through 5).
7. Position Cargo Fire Panel DET SELECT switch(es) as required for flight. One detection loop
(A or B) must operate normally in each cargo compartment or MEL loading restrictions must be
observed.
26-19-02-02: No.2 Extinguisher Bottle:
The fire suppression capability is reduced to 60 minutes. Therefore the airplane must remain within
60 minutes of a suitable airport.
26-19-13: DETECTOR FAULT Light
Before each flight, do a test of the cargo fire detection and suppression system using the TEST
switch on the cargo fire panel.
(M) MAINTENANCE PROCEDURES — texte MEL (maintenance ; l’équipage vérifie que c’est fait) :
None required.
(M#) MAINTENANCE PROCEDURES — personnel maintenance obligatoire — texte MEL :
26-19-02-02: No.2 Extinguisher Bottle
Do these steps to prevent anomalies in the indication of the DISCH light during operation and the
EXT FWD and EXT AFT test light during system test (AMM 26-00-00/901):
1. Disconnect, cap and stow electrical connector D12816 on the Extinguisher Bottle No. 2 pressure
switch.
2. Disconnect electrical connectors D12820 and D12818 from the Extinguisher Bottle No. 2 squibs.
3. Install a jumper across pins 1 and 2 on both connectors. Cap and stow connectors.
26-19-04-01: DISCH Light(s)
Do these steps for an inoperative DISCH light circuit to make sure that the fire extinguisher bottle
has an adequate charge (AMM 26-00-00/901):
1. Build a test lamp (28 Volts DC/40 milliamps) with pigtail leads terminating in pin contacts in a
suitable holder.
NOTE: Any suitable lamp or digital multimeter can be used.
2. Remove the Cargo Fire Panel.
3. Disconnect the electrical connector D12760 from the panel.
4. Connect the test lamp or digital multimeter between the airplane side of connector D12760, Pin
48 (+28 volt source for Bottle No. 1) and Pin 28 (pressure switch ground).
5. For airplanes with Extinguisher Bottle No. 2:
a) Connect test lamp or digital multimeter between the airplane side of connector D12760, Pin
45 (+28 volt source for Bottle No. 2) and Pin 28 (pressure switch ground).
6. If the test lamp remains extinguished or the digital multimeter indicates an open circuit the
associated bottle has an adequate charge.
7. Remove the test lamp.
8. Reconnect electrical connector D12760 or D13188 to the panel.
9. Install the Cargo Fire Panel.
26-19-05: Extinguisher Bottle Pressure Switch
Do these steps to verify the charge of the associated fire extinguisher bottle and to deactivate the
pressure switch (AMM 26-00-00/901):
1. Remove the extinguisher bottle.
2. Weigh the extinguisher bottle on a scale that is accurate to within +/- 0.1 pound.
3. Confirm that the extinguisher bottle weight is within 0.25 pounds of the service weight stamped
on the bottle’s identification plate.
4. Install the extinguisher bottle.
5. Cap and stow the associated bottle’s pressure switch electrical connector.
26-19-06: EXT Lights (FWD and AFT)
Do these steps for an inoperative EXT light circuit to verify normal operation of associated squib
circuit (AMM 26-00-00/901):
1. Build a test lamp (28 Volts DC/40 milliamps) with pigtail leads terminating in pin contacts in a
suitable holder.
NOTE: Any suitable lamp can be used.
2. Remove the Cargo Fire Panel.
3. Disconnect the electrical connector D12760 or connector D13188, for -800BCF airplane, from the
panel.
CAUTION:
TO PREVENT INJURY, RESTRICT PERSONNEL FROM EXTINGUISHER BOTTLE AREA
DURING SQUIB CIRCUIT TEST. LIMIT CURRENT TO 40 MILLIAMPS MAXIMUM DURING
TEST. USE TEST LAMP (28 VOLT, 40 MILLIAMPS ONLY). DO NOT USE A MULTIMETER.
4. Use the table below to determine which pin numbers to connect between the test lamp and the
airplane side of connector D12760 or D13188.
a) If the test lamp illuminates, the squib circuit is intact.
5. Remove the test lamp.
6. Reconnect electrical connector D12760 or D13188 to the panel.
7. Install the Cargo Fire Panel.
Continued…