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is useful to have a background understanding of the effect that they have on the handling and
management of the aircraft. In all cases, the ECAM should be handled as described in FCTM (Refer
to OP-040 PURPOSE OF THE ECAM).
LANDING DISTANCE PROC
Applicable to: ALL
Should a failure occur with "LANDING DISTANCE PROC APPLY" message displayed on the
ECAM STATUS page, the crew will enter the LDG CONF/APP SPD/LDG DIST/ CORRECTIONS
FOLLOWING FAILURES table in QRH chapter 2 and read:
• The flap lever position for landing
• Delta VREF if required for VAPP determination
• The landing distance factor for landing distance calculation
VAPP DETERMINATION
Applicable to: ALL
1BACKGROUND
Some failures affect the approach speed.
• Some failures (typically slat or flap failure) increase the VLS. In this case, the VLS displayed on
the PFD (if available) takes into account the actual configuration.
• In some others failures, it is required to fly at speed higher than VLS to improve the handling
characteristics of the aircraft. It is the reason why the ECAM provide a speed increment, called
ΔVLS. This speed increment is to be added to the VLS displayed on the PFD when the landing
configuration is reached.
In all cases:
VAPP = VLS (PFD) + ΔVLS (ECAM) + APPRoach CORrection
In order to prepare the approach and landing, the crew needs to calculate the VAPP in advance.
The appropriate VLS is not necessarily available at that time on the PFD, because the landing
configuration is not yet established.
VAPP = VREF see(1) + ΔVREF see(2) + APPRoach CORrection see(3)
A330/A340 FLIGHT CREW TRAINING MANUAL
ABNORMAL OPERATIONS
GENERAL
A330/A340 FLEET AO-010 P 2/6
FCTM 17 JUN 09
(1) VREF from:
MCDU ‐ PERF APPR page provided MCDU F-PLN is updated and sequenced, or
‐ VAPP Calculation in the case of an ABNORMAL/EMERGENCY Configuration (QRH part 2 -
ABNORMAL PROCEDURES)
VREF is defined as the VLS of CONF FULL.
(2) ΔVREF from:
‐ The LDG CONF/APPR SPD/LDG DIST ON DRY RUNWAYS FOLLOWING FAILURES table
(QRH part 2 - ABNORMAL PROCEDURES), or
‐ The LDG CONF/APPR SPD/LDG DIST ON WET RUNWAYS FOLLOWING FAILURES table
(QRH part 2 - ABNORMAL PROCEDURES), or
‐ The LDG CONF/APPR SPD/LDG DIST ON CONTAMINATED RUNWAYS FOLLOWING
FAILURES table (QRH part 2 - ABNORMAL PROCEDURES).
ΔVREF depends on system failure and landing configuration.
(3) APPRoach CORrection from VAPP Calculation in the case of an ABNORMAL/EMERGENCY
Configuration (QRH part 2 - ABNORMAL PROCEDURES).
The APPRoach CORrection (APPR COR) takes into account:
‐ The use of A/THR, and
‐ Ice accretion if applicable, and
‐ Wind correction when required.
Note: If ΔVREF ≤ 5 kt, when :
‐ A/THR is used, or
‐ Ice accretion condition is encountered, or
‐ both,
the APPRoach CORrection is the highest of 5 kt and 1/3 headwind.
ΔVREF on QRH versus ΔVLS on PFD
A330/A340 FLIGHT CREW TRAINING MANUAL
ABNORMAL OPERATIONS
GENERAL
A330/A340 FLEET AO-010 P 3/6
FCTM 17 JUN 09
METHOD
�� If the QRH shows a ΔVREF:
VAPP computation principle with ΔVREF
(1) For ΔVREF ≤ 5 kt apply additional factor to the landing distance if applicable (See (2) )
(2) Multiply the landing distance by an additional factor of 1.2
Then, if landing in CONF 3 is required, select CONF 3 on the MCDU. (This ensures proper
operation of the GPWS).
A330/A340 FLIGHT CREW TRAINING MANUAL
ABNORMAL OPERATIONS
GENERAL
A330/A340 FLEET AO-010 P 4/6
FCTM 17 JUN 09
When fully configured in final approach, the crew will check the reasonableness of the final
approach speed computed by the crew with regard to VLS on the PFD speed scale.
�� If the QRH shows no ΔVREF:
The flight crew can use the MCDU VAPP, as computed by the FMS (the FMS takes
systematically into account the use of A/THR).
IN FLIGHT LANDING DISTANCE CALCULATION FOLLOWING FAILURES
Applicable to: ALL
GENERAL
The actual landing distance (from 50 ft above the runway surface until the aircraft comes to the
complete stop) is measured during specific flight tests for the certification of the aircraft. This
distance represents the absolute performance capability of the aircraft. It is published without
safety margin under the name "LANDING DISTANCE WITHOUT AUTOBRAKE" in the QRH.
To compute the actual landing distance following any failure affecting the landing performance, the
crew multiplies the "LANDING DISTANCE WITHOUT AUTOBRAKE" CONFIGURATION FULL by:
The LDG DIST ‐ Factor following the failure, and
　
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