A350 Limitations

A350 - Clean Config maneuvering Load

-1g to +2.5g

A350 - Not Clean Config maneuvering Load

0g to +2g

A350 - Minimum TAT

-52C

A350-900: Ceiling

43,100ft

A350-1000: Ceiling

41,450ft

A350 - Max Pressure Altitude for T/O or LDG

12,500ft (Between -37.5C and 30C)

A350 - Runway slope limitation

± 2 %

A350 - Max crosswind landing (dry 6 or wet 5 RWYCC)

40kts

A350 - Max crosswind T/O (dry 6 or wet 5 RWYCC)

35kts

A350 - Max tailwind T/O

15kts

A350 - Max tailwind LDG

15kts

A350 - Max wind for cabin and cargo doors operation

40kts (closed before wind reaches 60kts)

A350-1000: Max final approach slope if airport elevation > 8000ft

4 degrees

A350-1000: VFEs

1: 260kts

1+F: 231kts

2: 219kts

3: 206kts

FULL: 192kts

A350-900: VFEs

1: 255kts

1+F: 220kts

2: 212kts

3: 195kts

FULL: 186kts

A350-900: ARS speed

210kts

A350-1000: ARS speed

221kts

A350 - VMO

340kts

A350 - MMO

M0.89

A350 - VLE/VLO

250kts / M0.55

A350-900: VLO Gravity

220kts / M0.48

A350-1000: VLO Gravity

250kts / M0.55

A350-900: Max tire speed

204kts GS

A350-1000: Max tire speed

213kts GS

A350-900: VMCL

122kts

A350-1000: VMCL

123kts

A350-900: VMCA Clean pressure altitude 0ft

131kts

A350-1000: VMCA Clean pressure altitude 0ft

138kts

A350 - Max wiper operating speed

230kts

A350-1000: Takeoff weight limitations TOW < 170T

CONF 1+F is mandatory for T/O

If x-wind > 20kts: D12 or D16 derated takeoff is mandatory

[Check FCOM if TOW < 200T]

A350-1000: Takeoff weight limitations TOW 170 - 175T

CONF 1+F mandatory for T/O

[Check FCOM if TOW < 200T]

A350-1000: Takeoff weight limitations TOW 175 - 200T

FLEX T/O is not permitted in CONF 3

[Check FCOM if TOW < 200T]

A350-900: Takeoff weight limitations TOW < 160T

If crosswind > 25kts: D12, D16, D20 or D24 derate mandatory

FLEX takeoff is not permitted in CONF 3

[Check FCOM if TOW < 175T]

A350-900: Takeoff weight limitations TOW 160-175T

FLEX takeoff is not permitted in CONF 3

[Check FCOM if TOW < 175T]

A350-1000: Landing weight limitations

If landing weight < 150T: CONF 3 landing mandatory, landing with tailwind above 10kts is not permitted

A350 - APU bleed use with HP air start unit

Do not use bleed air from the APU bleed and from the HP air start unit at the same time

A350 - Max positive differential pressure

10.29psi

A350 - Max negative differential pressure

-0.72psi

A350 - Use of LP air conditioning unit

Do not use conditioned air from the packs and from the LP air conditioning unit at the same time

Do not set air flow selector to HI if an LP air conditioning unit is used and the aircraft is electrically powered

A350 - When does the ram air inlet open

If the differential pressure is < 2psi

A350 - When can A/P be used at takeoff

At least 5 secs after liftoff

A350 - When can A/P be used after manual go around

100ft AGL

A350 - What’s the minimum height for A/P in approach with F-G/S mode

200ft AGL

A350 - What’s the minimum height for A/P in approach with V/S or FPA mode

200ft AGL

A350 - What’s the minimum height for A/P in approach with APP-DES mode

200ft AGL

A350 - What’s the minimum height for A/P in approach with G/S mode and APPR1 on FMA

160ft AGL

A350 - What’s the minimum height for A/P in approach with G/S mode and LAND1 / LAND2 / LAND3 SINGLE / LAND3 DUAL on FMA

0ft AGL if autoland

80ft AGL if manual landing

A350 - What’s the minimum height on the AFS CP for A/P in OP DES or DES mode

If the AFS CP selected altitude is set below MDA/DA or 500ft AGL, whichever is higher

A350 - What are the requirements for RNP AR operations

Minimum RNP AR level is 0.10nm, performance requires AP ON and:

Departure - in NAV mode

Initial / intermediate approach - in NAV mode

Final approach - in NAV and APP-DES modes

Missed approach - in NAV mode

(For RNP AR limitations limited to RNP0.3nm only, crew may consider AP off and FD ON but airbus recommends AP ON)

A350 - What are the limitations on APP-DES mode

Certified for RNP final approaches, provided RNP AR capability is compliant with selected procedure

Use of APP-DES vertical mode is not permitted for RNAV with LNAV or LNAV/VNAV or LP/LPV minima, or for approaches based on navaids.

A350 - Autoland A/P requirements

At least one autopilot engaged in APPR mode, LAND1, LAND 2, LAND3 SINGLE or LAND3 DUAL must be displayed on the FMA

A350 - Autoland Flaps limitations

Must be in CONFIG 3 or CONFIG FULL

Can be done in both configurations with OEI

A350 - Autoland minimum weight

140T

A350 - Autoland max airport elevation

9200ft

A350 -Autoland glide slope angle limitations

-2.5 degrees to -3.5 degrees

A350 - Autoland runway slope limitations

± 1%

A350 - Autoland runway condition limitations

CAT IIIB operations not authorized on contaminated runways

Rollout demonstrated on dry and wet runways but not demonstrated on contaminated runways

A350 - Autoland max tailwind

15kts

A350 - Autoland Max headwind

40kts

A350 - Autoland Max crosswind

30kts

A350 - CAT III alert height

200ft AGL

Requires LAND3 DUAL to be displayed on FMA

A350 - Required non-monitored equipment for ILS CAT II/III approach with autoland

2x AP pb / CAPT sidestick pb / FO sidestick pb

1x autoland light

AP OFF alert - available 

DH indication - 1 for PM

2x attitude indication on PFD

1 x attitude indication on standby instrument

1 x windshield wiper or rain repellant for PF

1 x windshield heating for PF

A350 - Limitation on loading ATC F-PLN clearance in continental europe

You cannot use LOAD-SEC3 button for route clearances received from ATC centers in continental europe.

A350 - APU oil quantity limitations

APU may be started and operated even if the OIL LEVEL LO ECAM advisory is displayed

Maintenance action required within 20h of APU operation

A350 - APU start limitations

After 3 consecutive APU start attempts, the flight crew must wait 60 mins before a new start attempt

A350 - Max APU N speed

106%

A350 - Max APU EGT for start

1260C

A350 - Max APU EGT while running

680C

A350 - APU start/shutdown limitations during refueling/defueling

APU start is not permitted during refuel/defuel procedure if the APU has failed to start or automatic shutdown has occurred

Normal APU shutdown must be completed if fuel spill has occurred during refuel/defuel procedure

A350 - APU electrical generator limitations

APU electrical generator can operate in the entire flight envelope

A350 - APU max altitude to assist engine start

25000ft

A350 - APU max altitude for air-conditioning and pressurization (single pack operation)

25,000ft

A350 - APU max altitude for air-conditioning and pressurization (dual pack operation)

22,500ft

A350 - APU bleed air for wing anti ice limitation

Use of APU bleed air for wing anti ice is not permitted

A350 - HUD manual approach limitations

Slope has to be between -2 degrees to -4 degrees

A350 - HF communication limitations

Do not use HF during ground fuel operations

A350 - TOGA AEO time limit

5 mins

A350 - TOGA OEI time limit

10 mins

A350 - TOGA EGT limit

900C

A350 - MCT time limit

Not limited

A350 - MCT EGT limit

850C

A350 - starting on ground EGT limit

700C

A350 - starting in air EGT limit

850C

A350-900: Max N1 (Mk I)

98.1%

A350-900: Max N1 (MK II)

99.1%

A350-900: Max N2

100.4%

A350-900: Max N3

98.8%

A350-1000: Max N1

104.3%

A350-1000: Max N2

102.6%

A350-1000: Max N3

102.2%

A350-900: Max oil continuous temperature

180C

A350-1000: Max oil continuous temperature

188C

A350 - Oil minimum starting temperature

-40C

A350 - Oil minimum temperature before T/O

50C

A350 - minimum oil pressure

25psi

A350-900: minimum oil quantity

13 quarts

If indication on ENG SD page is less than minimum oil quantity then check oil tank level in tech log or check in tech log that oil tank was filled.

A350-1000: minimum oil quantity

Flight time < 5 hours = 13qts

Flight time 5-7 hours = 15qts

Flight time > 7 hours = Full tank (indicated on SD pg > 22qts + toil tank reported as filled in tech log) 

A350 - engine start limit

Max continuous start operation is 5 mins

OR: two consecutive cycles of 3 min max, plus one additional cycle of 1 min, with run down to zero N3 and wait 30s between each cycle

Wait 30 mins after the last cycle to allow starter to cool

A350 - N3 limitation for starter engagement

Can’t run starter when N3 is above 10% on ground or 30% in flight

A350 - reverse thrust limitation

Reverse thrust in flight prohibited

Backing aircraft with reverse thrust is not permitted

Max reversers should not be used below 70kts. Idle reverse is allowed down to aircraft stop.