Smoke, Fire or Fumes

Condition: Smoke, fire or fumes occurs. Objective: To remove power from the ignition source. To land the airplane as soon as possible, if needed.

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Initial Actions

• Step 1: Don oxygen masks and smoke goggles, if needed.
• Step 2: Establish crew and cabin communications.
• Step 3: (not shown in extract — see full QRH)
• Step 4: IFE/PASS SEATS switch … OFF
• Step 5: RECIRC FANS switches (both) … Off
• Step 6: APU BLEED AIR switch … Off
• Step 7: Any time the smoke or fumes becomes the greatest threat:
  • → Go to Smoke or Fumes Removal checklist (page 8.28)

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Step 8: Source Identification

Source obvious & can be extinguished	Source NOT obvious or cannot be extinguished
Isolate and extinguish the source	→ Go to Step 10
If practical, remove power by switch or CB
→ Go to Step 9

Step 9: After Extinguishing

Confirmed extinguished & smoke decreasing	NOT confirmed extinguished or smoke continues
Continue flight at captain’s discretion	→ Go to Step 10
Restore unpowered items at captain’s discretion
→ QRH-Smoke-Fumes-Removal if needed

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Steps 10–23: Systematic Isolation (Source Not Found)

• Step 10: Advise cabin — main cabin lighting will be turned off
• Step 11: CABIN/UTILITY switch … OFF
• Step 12: Initiate diversion to nearest suitable airport
• Step 13: Consider immediate landing if situation becomes uncontrollable
• Step 14: Do not delay landing to complete following steps

Left Pack Isolation

• Step 15: C BLEED AIR ISLN switch … Off
• Step 16: L PACK switch … Off
• Step 17: L TRIM AIR switch … Off
• Step 18: Do not accomplish: PACK L, TRIM AIR L
• Step 19: Wait 2 minutes (unless smoke/fumes increasing)

Step 20: First Decision Point

Smoke/fumes continue or increasing	Smoke/fumes decreasing
L PACK → AUTO	→ QRH-Smoke-Fumes-Removal if needed ■ ■ ■ ■
L TRIM AIR → ON
R PACK → Off
R TRIM AIR → Off → Go to Step 21

Right Pack Isolation

• Step 21: Do not accomplish: PACK R, TRIM AIR R
• Step 22: Wait 2 minutes (unless smoke/fumes increasing)

Step 23: Final Decision

Smoke/fumes continue or increasing	Smoke/fumes decreasing
C BLEED AIR ISLN → AUTO	→ QRH-Smoke-Fumes-Removal if needed ■ ■ ■ ■
R PACK → AUTO
R TRIM AIR → ON
Consider immediate landing

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Decision Flowchart

flowchart TD
    A["Smoke, Fire or Fumes"] --> B["Steps 1-6: Don O₂ masks,<br/>IFE OFF, RECIRC OFF, APU BLEED OFF"]
    B --> S7{Smoke is<br/>greatest threat?}
    S7 -->|Yes| SR["Go to Smoke/Fumes Removal"]
    S7 -->|No| S8{Source obvious &<br/>can extinguish?}
    S8 -->|Yes| S8A["Isolate & extinguish<br/>Remove power"] --> S9{Confirmed<br/>extinguished?}
    S9 -->|Yes| S9A["Continue flight<br/>at captain's discretion ■"]
    S9 -->|No| S10
    S8 -->|No| S10["Steps 10-14: Advise cabin,<br/>CABIN/UTILITY OFF,<br/>Initiate diversion"]

    S10 --> LP["<b>Left Pack Isolation</b><br/>C BLEED ISLN Off<br/>L PACK Off, L TRIM AIR Off"]
    LP --> W1["Wait 2 min"]
    W1 --> D1{Smoke/fumes<br/>decreasing?}
    D1 -->|Yes| DONE1["Source = L Pack<br/>Go to Smoke/Fumes Removal ■"]
    D1 -->|No| RP["<b>Right Pack Isolation</b><br/>L PACK → AUTO, L TRIM AIR → ON<br/>R PACK Off, R TRIM AIR Off"]
    RP --> W2["Wait 2 min"]
    W2 --> D2{Smoke/fumes<br/>decreasing?}
    D2 -->|Yes| DONE2["Source = R Pack<br/>Go to Smoke/Fumes Removal ■"]
    D2 -->|No| FINAL["Restore R Pack<br/>C BLEED ISLN → AUTO<br/>Source NOT air-con related<br/>Consider immediate landing"]

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Notes & Gotchas

WARNING

Step 13-14: Do NOT delay landing to complete the pack isolation steps. The checklist is designed so you can stop at any point and land.

• This is a systematic pack-by-pack isolation procedure (Left → Right → Center)
• Each 2-minute wait is to observe whether the smoke source has been isolated
• If no improvement after isolating both packs, the source is likely NOT air conditioning related

Cross-References

• Smoke or Fumes Removal — Companion checklist (QRH 8.28)