QRH 6 Electrical

← Électrique

Air Inuit QRH B73C · Section 6 · Amendment 3, 22 mai 2025

SOURCE OFF

SECTION 6

Bleu = section 6. Orange = section 8. Aucune action vitale ici.

Aide-mémoire. Le papier fait foi.

BATTERY DISCHARGE

ELECTRICAL 6.3

BAT DISCHARGE

CONDITION

A battery discharge exceedance occurs.

A fully charged battery supplies a minimum of 60 minutes of standby power.

Une batterie pleine donne au moins 60 minutes de standby.

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Checklist finie. Pas d’autre étape sur 6.3.

DRIVE

ELECTRICAL 6.3

DRIVE

CONDITION

A generator drive malfunction occurs.

Action is irreversible.

1. Generator drive DISCONNECT switch (affected side) → Confirm → Hold in the DISCONNECT position momentarily.

Empêche d’endommager le drive. Reconnexion au sol seulement.

CHOISIS UNE OPTION

APU → START

When APU is running: APU GEN switch (affected side) → ON

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Checklist finie.

Plan to land at the nearest suitable airport. Only one main AC power source remains.

Aéroport convenable le plus près. Une seule source AC principale.

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ELEC

ELECTRICAL 6.4

ELEC

CONDITION

A standby power or DC system fault occurs.

The ELEC light illuminates on the ground only.

1. Do not take off.

Le voyant s’allume au sol seulement. On ne décolle pas.

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LOSS OF BOTH

LOSS OF BOTH ENGINE DRIVEN GENERATORS

ELECTRICAL 6.5

CONDITION

Both engine driven generators are off.

At high altitude, thrust deterioration or engine flameout may occur.

1. Engine GEN switches (both) → ON, one at a time

2. CHOISIS UNE OPTION

YAW DAMPER switch → ON

3. YAW DAMPER switch → ON

4. CHOISIS UNE OPTION

APU start attempts are not recommended above 25,000 feet.

APU → START

When APU is running: APU GEN switch (affected side) → ON

Plan to land at the nearest suitable airport. Only one main AC power source remains.

5. CHOISIS UNE OPTION

BUS TRANSFER switch → OFF

ELEC HYD PUMP switches (both) → OFF

APU start attempts are not recommended above 25,000 feet. With both buses off, only one start attempt is recommended. Multiple start attempts reduce standby power capacity.

APU → START

6. When APU is running: APU GEN switches (both) → ON, one at a time

7. Check RCCB REMOTE, P6-SPCU-A-4.

8. CHOISIS UNE OPTION

Reset circuit breaker. Only one reset is allowed.

9. CHOISIS UNE OPTION

10. BUS TRANSFER switch → AUTO

Remet le courant sur le Transfer Bus restant si un SOURCE OFF reste allumé.

11. ELEC HYD PUMP switches (both) → ON, one at a time

12. YAW DAMPER switch → ON

13. Plan to land at the nearest suitable airport. Only one main AC power source remains.

14. Avoid icing conditions.

Flight in icing conditions can result in erroneous flight instrument indications.

15. Plan to land at the nearest suitable airport.

A fully charged battery supplies a minimum of 60 minutes of standby power.

16. The right IRS operates on DC power for 5 minutes.

17. CHOISIS UNE OPTION

IRS transfer switch → BOTH ON L

Do not engage either autopilot.

18. CHOISIS UNE OPTION

Plan to land at the nearest suitable airport. Only one main AC power source remains.

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The left IRS will operate as long as battery power remains.

Plan to land at the nearest suitable airport.

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CHECKLIST FINIE

Les deux écrans d’attitude primaires sont bons. Pas de flag ATT.

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Action is irreversible. Do this step only if both primary attitude displays are failed.

19. IRS MODE selectors (both) → ATT

Maintain straight and level, constant airspeed, until attitude displays recover (about 30 seconds).

20. Enter magnetic heading on the POS INIT page, or on the overhead IRS display unit, HDG/STS.

The MAP display is not available. Periodically enter updated heading.

21. Do not engage either autopilot.

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Checklist finie.

SOURCE OFF

ELECTRICAL 6.12

CONDITION

The transfer bus is not powered by the last selected source.

1. CHOISIS

2. Engine GEN switch (affected side) → ON

3. CHOISIS UNE OPTION

4. CHOISIS UNE OPTION

APU → START

When APU is running: APU GEN switch (affected side) → ON

5. CHOISIS UNE OPTION

CHECKLIST FINIE

Le voyant est éteint.

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Plan to land at the nearest suitable airport. Only one main AC power source remains.

Aéroport convenable le plus près. Une seule source AC principale.

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STANDBY PWR OFF

STANDBY POWER OFF

ELECTRICAL 6.14

CONDITION

One or more of these buses are not energized.

AC standby bus
DC standby bus
Battery bus

1. STANDBY POWER switch → BAT

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TR UNIT

Starlink

ELECTRICAL 6.14

CONDITION

The flight crew determines the need to de-power the entire Starlink system in flight.

1. STARLINK switch → OFF

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TR UNIT

ELECTRICAL 6.14

CONDITION

One or more transformer rectifiers are failed.

1. Do not use the AFDS approach mode during an ILS or GLS approach.

Autoland is not available.

Pas d’approche AFDS en ILS ou GLS. Autoland indisponible.

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TRANSFER BUS OFF

TRANSFER BUS OFF

Transfer bus hors tension

ELECTRICAL 6.15

QRH 6.15

CONDITION

The transfer bus is not energized.

1. Engine GEN switch (affected side) → ON

2. CHOISIS UNE OPTION

3. CHOISIS UNE OPTION

APU → START

When APU is running: APU GEN switch (affected side) → ON

4. CHOISIS UNE OPTION

CHECKLIST FINIE

Le voyant est éteint.

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Plan to land at the nearest suitable airport. Only one main AC power source remains.

Aéroport convenable le plus près. Une seule source AC principale.

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Smoke, Fire or Fumes

QUICK ACTION 8.21

Pas une checklist de la section 6. L’index envoie en section 8, page 8.21.