-

 DUAL HYDRAULIC FAILURES

GENERAL GUIDELINES
It is important to note that the AP will not be available to the crew but both FD and A/THR still
remain. Additionally, depending on the affected hydraulic circuits, aircraft handling characteristics
may be different due to the loss of some control surfaces. The PF will maneuver with care to avoid
high hydraulic demand on the remaining systems.
The PF will be very busy flying the aircraft and handling the communications with the flight controls
in Alternate Law (HYD G+B SYS LO PR or HYD G+Y SYS LO PR).
A double hydraulic failure is an emergency situation, with red LAND ASAP displayed, and a
MAYDAY should be declared to ATC. A landing must be carried out as soon as possible bearing in
mind, however, that the ECAM actions should be completed prior the approach.
PF will then require the ECAM actions. A clear reading of STATUS is essential to assess the
aircraft status and properly sequence actions during the approach.
This failure is called a "complex procedure" and the QRH summary should be referred to upon
completion of the ECAM procedure (Refer to AOP-30-60 Use of Summaries).
While there is no need to remember the following details, an understanding of the structure of
the hydraulic and flight control systems would be an advantage. The F/CTL SD page and the
OPS DATA section of the QRH provide an overview of the flight controls affected by the loss of
hydraulic systems.
The briefing will concentrate on safety issues since this will be a hand-flown approach with certain
handling restrictions:
‐ Use of the selected speeds on the FCU
‐ Landing gear gravity extension
‐ Approach configuration and flap lever position
‐ Approach speed VAPP
‐ An early stabilized approach will be preferred
‐ Tail strike awareness
‐ Braking and steering considerations
‐ Go around call out, aircraft configuration and speed.
The STATUS page requires, in each case, a landing gear gravity extension. The LANDING GEAR
GRAVITY EXTENSION procedure will be completed with reference to the QRH.

Comments

  1. mikeJune 17, 2024 at 11:28 AM

    This comment has been removed by the author.

    ReplyDelete
  2. mikeJune 17, 2024 at 11:28 AM

    This comment has been removed by the author.

    ReplyDelete

Post a Comment

Popular posts from this blog

Aircraft Electrical Systems: A320/A321 Briefing

-
  Aircraft Electrical Systems: A320/A321 Briefing Document 1. Introduction to the A320/A321 Electrical Power System The A320/A321 aircraft utilizes a sophisticated electrical power system designed for reliability and redundancy. It primarily consists of a "three-phase 115/200 V 400 Hz constant-frequency AC system and a 28 V DC system." Electrical transients are managed to be acceptable for equipment, with commercial supply having secondary priority. The system is designed for both normal and abnormal operations, ensuring continuous power supply to critical aircraft systems. 2. Generation of Electrical Power 2.1. AC Generators The primary source of AC power comes from two engine-driven generators (GEN 1 and GEN 2), each capable of supplying 90 kVA of three-phase 115/200 V 400 Hz power. Two Generator Control Units (GCU) manage these generators, performing the following functions: "Control the frequency and voltage of the generator output." "Protect the network by...
Read more
-
  A Student's Guide to the Airbus A320 ECAM System Display 1.0 Welcome Aboard: What is the ECAM System Display? Welcome to the flight deck of the Airbus A320. At the heart of this modern cockpit is the Electronic Centralized Aircraft Monitor, or ECAM , a system designed to give pilots a comprehensive overview of the aircraft's status. The ECAM uses two main screens: the upper Engine/Warning Display (E/WD) and the lower System/Status Display (SD). This guide focuses exclusively on the System Display (SD) , which provides pilots with detailed, real-time information. Think of the SD as the pilot's window into the aircraft's health. It presents synoptic diagrams—clear, schematic views—of the plane's various systems, allowing for quick and intuitive monitoring. To truly understand the aircraft, we must first learn how to navigate and interpret the information presented on these different system pages. 2.0 A Tour of the A320's Systems: The 11 Key Pages The System Disp...
Read more
-
  A320/A321 Abnormal and Emergency Procedures: Smoke/Fumes/AVNCS Smoke Study Guide This study guide covers the procedures for handling smoke, fumes, and AVNCS (Avionics) smoke in the A320/A321 aircraft as outlined in the provided Vietnam Airlines Flight Crew Operating Manual (FCOM), Flight Crew Techniques Manual (FCTM), and Quick Reference Handbook (QRH). I. General Principles and Philosophy Risk Assessment: Smoke/fumes in the fuselage can lead to hazardous situations and panic. Timely control of the source and immediate diversion are crucial. Procedure Application: Applies to all situations where smoke/fumes are detected by an ECAM alert or by the crew. Crew refers to QRH [QRH] SMOKE / FUMES / AVNCS SMOKE procedure. If AVNCS SMOKE alert is active, crew refers directly to [QRH] SMOKE / FUMES / AVNCS SMOKE. If smoke/fumes are perceptible and confirmed visually or by smell, apply the procedure. If smoke/fumes are not perceptible, but an AVNCS SMOKE alert is active, the crew should c...
Read more