De Havilland Dash 8‑400 (Q400)

Comprehensive Normal & Abnormal Checklist ASOP

For flight‑simulation training only – NOT for real‑world aviation use.

Version 1.1 - 23 May 2026

Legend

PF – Pilot Flying PM – Pilot Monitoring
Italic – Call‑outs Bold – Memory item/trigger
(A) – Automatic call/alert (M) – Manoeuvre

Normal Operations Checklists

Cautions & Notes

Aborted Start - Condition Lever FUEL OFF immediately. Max ITT start limit 920 °C for max 20 s. Min 30 s between start attempts.

Taxi - Brake check at first movement: “Brakes checked, pressure ___”.

Landing - Touchdown: Power Levers DISC - GROUND RANGE - Reverse. Reverse idle at 60 kt.

Abnormal / Memory Items (Extract)

ENGINE FIRE or SEVERE DAMAGE (In‑Flight)

Step	Action
1	Power Lever (affected) → FLIGHT IDLE
2	Condition Lever (affected) → CONFIRM → FUEL OFF
3	Alternate Feather → PUSH (if Np not decreasing)
4	Fuel Firewall Shutoff → CLOSED
5	Engine Fire Handle → CONFIRM → PULL
6	Extinguisher FWD → PUSH, wait 30 s
7	If fire persists → Extinguisher AFT → PUSH

PROPELLER OVERSPEED

Item	Action
Power Lever (affected)	FLIGHT IDLE
Condition Lever (affected)	START & FEATHER
If Np not decreasing	Alternate Feather → PUSH
Monitor	Np decay toward feather

EMERGENCY DESCENT

Item	Action
Announce	”EMERGENCY DESCENT” (×3)
SIGNS	ON
Oxygen Masks	ON
Condition Levers	MAX (1020 RPM)
Power Levers	FLIGHT IDLE
Target Speed	VMO (altitude dependent, max ~286 KIAS at 18,000 ft)
Descend	Lowest safe alt or 10 000 ft

(See QRH for full procedure.)

Quick‑Reference Flap Schedule (Dash 8‑400)

Config	Placard Limit
Flaps 0	245 KIAS (SL–8 000 ft)
Flaps 5	200 KIAS
Flaps 10	181 KIAS
Flaps 15	172 KIAS
Flaps 35	158 KIAS

Propeller RPM Settings

Phase	Np (RPM)
Take‑Off / Go‑Around	1020 (MAX)
Climb	900
Cruise	850

Typical Speeds (~56 000 lb / Flaps 15)

Speed	KIAS
V1	~108
VR	~112
V2	~118
VREF	~116

Gear Limits

Limit	Speed
VLO (extend/retract)	200 KIAS
VLE (extended)	215 KIAS

Revision History

Rev	Date	Note	Author
1.0	28 Mar 2026	Initial checklist issue	ACVA Team
1.1	23 May 2026	Accuracy pass: PW150A ITT start limit corrected (920 °C / 20 s), emergency descent VMO clarified as altitude-stepped	ACVA Team

Introduction

Checklists

Organization

Flight Operations

Ground Operations

Airports

Safety & Training

Monitoring & Compliance

Reference

De Havilland Dash 8‑400 Checklist

De Havilland Dash 8‑400 (Q400)

Legend

Normal Operations Checklists

Cautions & Notes

Abnormal / Memory Items (Extract)

ENGINE FIRE or SEVERE DAMAGE (In‑Flight)

PROPELLER OVERSPEED

EMERGENCY DESCENT

Quick‑Reference Flap Schedule (Dash 8‑400)

Propeller RPM Settings

Typical Speeds (~56 000 lb / Flaps 15)

Gear Limits

Revision History

​De Havilland Dash 8‑400 (Q400)

​Legend

​Normal Operations Checklists

​Cautions & Notes

​Abnormal / Memory Items (Extract)

​ENGINE FIRE or SEVERE DAMAGE (In‑Flight)

​PROPELLER OVERSPEED

​EMERGENCY DESCENT

​Quick‑Reference Flap Schedule (Dash 8‑400)

​Propeller RPM Settings

​Typical Speeds (~56 000 lb / Flaps 15)

​Gear Limits

​Revision History

De Havilland Dash 8‑400 (Q400)

Legend

Normal Operations Checklists

Cautions & Notes

Abnormal / Memory Items (Extract)

ENGINE FIRE or SEVERE DAMAGE (In‑Flight)

PROPELLER OVERSPEED

EMERGENCY DESCENT

Quick‑Reference Flap Schedule (Dash 8‑400)

Propeller RPM Settings

Typical Speeds (~56 000 lb / Flaps 15)

Gear Limits

Revision History