Summary
Qatar Airways have agreed to take four A350-900 aircraft on a dry lease basis from LATAM. The new aircraft will be re-registered to Qatar Airways. These aircraft are referred as "QATAM" due to the hybrid nature of the product (LATAM hard product, Qatar Airways service)

This thread will continue to be updated as further information emerges, and this wikipost will hopefully answer some Frequently Asked Questions.

A trip report from one of the first QATAM-operated flights can be found here - https://www.flyertalk.com/forum/trip-reports/1828024-munich-doha-qatam-jj-frame-qr-service-a350-j.html#post28008887



Rotation 1 – QR59 DOH – MUC and QR60 MUC - DOH

• The first A359 to be transferred (PR-XTG) has been re-registered as A7-AMA and has been taken on a 1 year lease
• The aircraft operates QR59 DOH – MUC and QR60 MUC – DOH, replacing the current QR A359 from March until an unspecified date in the future
• A7-AMA entered revenue service on Wednesday 1 March 2017, operating QR59. Full entry to service took place on March 6th

Rotation 2 – QR57 DOH – MUC and QR58 MUC - DOH

• The second aircraft (PR-XTF) will be re-registered as A7-AMB and has been taken on a six month lease
• The aircraft will will fly the second MUC rotation (QR57 DOH – MUC and QR58 MUC – DOH), replacing the QR A359 from April 6th until an unspecified date in the future

Rotation 3 – QR149 DOH – MAD and QR150 MAD – DOH

• The third aircraft (unspecified) will be re-registered at A7-AMC. The lease duration is unclear at this time
• The aircraft is currently scheduled to start on the QR149 DOH – MAD and QR150 MAD – DOH rotations from Saturday 15th April, replacing the current QR B788
• Entry to service has been delayed from April 1st so further equipment swaps are likely. Details are still emerging about this operation and this thread will be updated as more information becomes available

Rotation 4 – QR151 DOH – MAD and QR152 MAD - DOH

• The fourth unspecified aircraft will be re-registered as A7-AMD and the lease duration is also unclear
• The aircraft is scheduled to operate as QR151 DOH – MAD and QR152 MAD – DOH from May 1st, replacing the current QR B788
• Entry to service has been delayed from April 15th so further equipment swaps are likely. Details are still emerging about this operation and this thread will be updated as more information becomes available

Seating advice - Business Class

• The QATAM A359’s “Premium Business” cabin has 30 seats in a 2-2-2 layout (compared with QR’s 36 seat A350 J cabin). There is no second business class cabin behind door 2 like on the QR aircraft
• The 2-2-2 configuration therefore means that not all seats have direct aisle access, which may be an annoyance to single travellers who wish to occupy a window seat
• Both toilets are located at the front of the cabin, whereas they are located behind row 6 on the QR A369. This may be of annoyance to passengers in row 1 on the QATAM A359
• The galley is also located ahead of row 1 and therefore may generate additional noise for those seated there
• Unlike on the QR A359, row 1 seats are not blocked until check-in and are available to reserve for passengers immediately when the aircraft is assigned
• AC power ports and USB ports are located at every seat
• The window seats in row 5 have one less window than the other seats in the cabin
• Window seat pairs in Rows 1 and 2 are not recommended as due to the curvature of the cabin they have less space than other equivalent seats further back in the aircraft
• There is no onboard bar facility on the QATAM A359

Seating advice - Economy Class

• The QATAM A359’s economy cabin has 318 seats in a 3-3-3 configuration, with 31” of seat pitch and 18” width. This is comparable with QR’s A359 seat dimensions, but the cabin is much smaller, holding 247 passengers
• There are five (yes, five) toilets located in the middle of the aircraft, between rows 33/34 and 35/36. This may be of annoyance to passengers in the area, and given the location next to door 3 people may congregate in the area between these rows
• A sixth toilet is located behind seats 50ABC and directly to the left of 51D. This may again be of annoyance
• The galley is located to the rear of the aircraft
• AC power ports are located between the seats and therefore two power outlets are divided between each set of three seats. USB ports are located at each seat at the bottom of the seat back IFE monitor
• The QATAM aircraft appears to have kept LATAM Economy+ seating that features extra leg room, at least in the short term, but it is not possible to select these seats. They are located in Row 15 (not included on the seatmap for QATAM operated flights) and both Rows 35 and 36 (blocked for selection on the seatmap)

A detailed seat map for the aircraft can be found at this link - https://www.latam.com/pt_br/conheca-nos/sobre-nos/nossa-frota/A350/