Exhibit 10.7

CONFIDENTIAL MATERIAL APPEARING IN THIS DOCUMENT HAS BEEN OMITTED AND FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION IN ACCORDANCE WITH THE
SECURITIES ACT OF 1933, AS AMENDED, AND RULE 24B-2 PROMULGATED THEREUNDER.
OMITTED INFORMATION HAS BEEN REPLACED WITH ASTERISKS.

Supplemental Agreement No. 12

to

Purchase Agreement Number 03784

Between

The Boeing Company

and

United Airlines, Inc.

Relating to Boeing Model 737 Aircraft

THIS SUPPLEMENTAL AGREEMENT is entered into as of June 24, 2016 by and between
THE BOEING COMPANY (Boeing) and UNITED AIRLINES, INC. (Customer);

WHEREAS, the parties hereto entered into Purchase Agreement Number 03784 dated
July 12, 2012 (Purchase Agreement), as amended and supplemented, relating to the
purchase and sale of Boeing Model 737 aircraft (Aircraft); and

WHEREAS, Boeing and Customer agree to incorporate performance guarantees for the
Firm 737-*** Aircraft; and

NOW THEREFORE, in consideration of the mutual covenants contained herein, the
parties agree to amend the Purchase Agreement as follows:

1. Table of Contents, Tables and Letter Agreements:

1.1 The “Table of Contents” is deleted in its entirety and replaced with the
attached “Table of Contents” (identified by “SA-12”).

2. Letter Agreement UAL-PA-03784-LA-1601973 entitled “Aircraft Performance
Guarantees – Firm 737-*** Aircraft” (identified by “SA-12”) is added to the
Purchase Agreement.

3. Miscellaneous: Boeing and Customer agree that the provisions of Letter
Agreement UAL-PA-03784-LA-1601973 will apply to each of the *** model 737-***
Aircraft added under Supplemental Agreement No. 63 and Supplemental Agreement
No. 64 of Purchase Agreement 1951 in addition to the 737-*** covered in Purchase
Agreement 03784.

 

UAL-PA-03784  

SA-12

BOEING / UNITED AIRLINES PROPRIETARY

   Page 1

--------------------------------------------------------------------------------

Supplemental Agreement No. 12 to

Purchase Agreement PA-03784

 

The Purchase Agreement will be deemed to be supplemented to the extent provided
herein as of the date hereof and as so supplemented will continue in full force
and effect.

****The remainder of this page is left intentionally blank****

 

UAL-PA-03784  

SA-12

BOEING / UNITED AIRLINES PROPRIETARY

   Page 2

--------------------------------------------------------------------------------

Supplemental Agreement No. 12 to

Purchase Agreement PA-03784

 

EXECUTED IN DUPLICATE as of the day and year first written above.

 

THE BOEING COMPANY      UNITED AIRLINES, INC.

/s/    Chastity Matthews        

    

/s/    Gerald Laderman        

Signature      Signature

Chastity Matthews

    

Gerald Laderman

Printed Name      Printed Name

Attorney-in-Fact

    

Senior Vice President - Finance and
acting Chief Financial Officer

Title      Title

 

UAL-PA-03784  

SA-12

BOEING / UNITED AIRLINES PROPRIETARY

   Page 3

--------------------------------------------------------------------------------

TABLE OF CONTENTS

 

    

SA NUMBER

ARTICLES

  

Article 1.

   Quantity, Model and Description   

Article 2.

   Delivery Schedule   

Article 3.

   Price   

Article 4.

   Payment   

Article 5.

   Additional Terms   

TABLE

  

1A.

   Aircraft Information Table – 737-***    SA-8

1B

   Aircraft Information Table - 2016 737-*** Aircraft    SA-11

1C.

   Aircraft Information Table –Firm 737-*** Aircraft    SA-10

EXHIBITS

  

A.

   Aircraft Configuration - 737-***   

A1.

   Aircraft Configuration – 2016 737-*** Aircraft    SA-9

A2.

   Aircraft Configuration – Firm 737-*** Aircraft    SA-10

B.

   Aircraft Delivery Requirements and Responsibilities   

SUPPLEMENTAL EXHIBITS

  

AE1.

   Escalation Adjustment/Airframe and Optional Features    SA-9

BFE1.

   BFE Variables for 737-*** Aircraft    SA-1

BFE2.

   BFE Variables for 2016 737-*** Aircraft Incorporated by SA-9    SA-9   
Attachment A1: BFE Variables for the *** 2016 737-*** Aircraft Incorporated by
SA-11    SA-11

BFE3.

   BFE Variables for Firm 737-*** Aircraft    SA-10

CS1.

   Customer Support Variables   

EE1.

   Engine Escalation, Engine Warranty and ***   

SLP1.

   Service Life Policy Components   

 

P.A. 03874   

TABLE OF CONTENTS, Page 1 of 4

BOEING / UNITED AIRLINES PROPRIETARY

   SA-12

--------------------------------------------------------------------------------

TABLE OF CONTENTS, CONTINUED

 

LETTER AGREEMENTS

  

SA
NUMBER

UAL-PA-03784-LA-1207868

   Performance Guarantees   

UAL-PA-03784-LA-1207870

   Spare Parts Initial Provisioning   

UAL-PA-03784-LA-1207871

   Special Matters   

UAL-PA-03784-LA-1207878

   Demonstration Flight Waiver   

UAL-PA-03784-LA-1207879R2

   *** Aircraft ***    SA-9

UAL-PA-03784-LA-1207879R4

   737-*** Aircraft    SA-11

UAL-PA-03784-LA-1207881

   Seller Purchased Equipment 737-***      

Attachment AR1 to Letter Agreement UAL-PA-03784-LA-1207881

   SA-9

UAL-PA-03784-LA-1208155R2

   *** Matters 737-*** and 2016 737-*** Aircraft    SA-9

UAL-PA-03784-LA-1208156R1

   *** for the 737NG Aircraft    SA-9   

Attachment A: ***

   SA-9   

Attachment B1: ***

   SA-9   

Attachment B2: ***

   SA-9

UAL-PA-03784-LA-1208172

   ***   

UAL-PA-03784-LA-1208173

   ***    SA-1

UAL-PA-03784-LA-1208169

   737 Production Adjustments   

UAL-PA-03784-LA-1208938

   Privileged and Confidential Matters   

UAL-PA-03784-LA-1208939

   Aircraft Model ***   

UAL-PA-03784-LA-1209115

   ***   

UAL-PA-03784-LA-1300306

   Aircraft Reschedule – ***    SA-2

UAL-PA-03784-LA-1400240

   Aircraft Rescheduling of ***    SA-5

UAL-PA-03784-LA-1504843

   Open Matters – 2016 737-*** Aircraft    SA-9

UAL-PA-03784-LA-1504844

   Special Matters – 2016 737-*** Aircraft    SA-9

UAL-PA-03784-LA-1600041

   Special Matters – Firm 737-*** Aircraft    SA-10

 

P.A. 03874    TABLE OF CONTENTS, Page 2 of 4    SA-12    BOEING / UNITED
AIRLINES PROPRIETARY   

--------------------------------------------------------------------------------

TABLE OF CONTENTS, CONTINUED

 

UAL-PA-03784-LA-1600586

  

737-*** Option Aircraft

   SA-11

UAL-PA-03784-LA-1600829

  

*** for 2016 737-*** Aircraft

   SA-11

UAL-PA-03784-LA-1601973

  

Aircraft Performance Guarantees - Firm 737-*** Aircraft

   SA-12

 

P.A. 03874    TABLE OF CONTENTS, Page 3 of 4    SA-12    BOEING / UNITED
AIRLINES PROPRIETARY   

--------------------------------------------------------------------------------

TABLE OF CONTENTS

 

SUPPLEMENTAL AGREEMENTS

  

DATED AS OF

Supplemental Agreement No. 1    September 27, 2012 Supplemental Agreement No. 2
   March 1, 2013 Supplemental Agreement No. 3    June 27, 2013 Supplemental
Agreement No. 4    September 11, 2013 Supplemental Agreement No. 5    March 3,
2014 Supplemental Agreement No. 6    June 6, 2014 Supplemental Agreement No. 7
   May 26, 2015 Supplemental Agreement No. 8    June 12, 2015 Supplemental
Agreement No. 9    January 20, 2016 Supplemental Agreement No. 10    February 8,
2016 Supplemental Agreement No. 11    March 7, 2016 Supplemental Agreement No.
12    June 24, 2016

 

P.A. 03874   

TABLE OF CONTENTS, Page 4 of 4

BOEING / UNITED AIRLINES PROPRIETARY

   SA-12

--------------------------------------------------------------------------------

LOGO [g188420ex107logo.jpg]   

The Boeing Company

P.O. Box 3707

Seattle, WA 98124-2207

 

 

UAL-PA-03784-LA-1601973

United Airlines, Inc.

233 South Wacker Drive

Chicago, Illinois 60606

 

Subject:    Aircraft Performance Guarantees – Firm 737-*** Aircraft Reference:
   Purchase Agreement No. PA-03784 (Purchase Agreement) between The Boeing
Company (Boeing) and United Airlines, Inc. (Customer) relating to 737NG
(Aircraft)

This letter agreement (Letter Agreement) amends and supplements the Purchase
Agreement. All terms used but not defined in this Letter Agreement will have the
same meaning as in the Purchase Agreement.

Boeing agrees to provide Customer with the performance guarantees in the
Attachment. These guarantees are exclusive and expire upon delivery of the
Aircraft to Customer.

 

1. Assignment.

Notwithstanding any other provisions of the Purchase Agreement, the rights and
obligations described in this Letter Agreement are provided to Customer in
consideration of Customer becoming the operator of the Aircraft and cannot be
assigned in whole or, in part.

 

2. Confidentiality.

The information contained herein represents confidential business information
and has value precisely because it is not available generally or to other
parties. Customer will limit the disclosure of its contents to employees of
Customer with a need to know the contents for purposes of helping Customer
perform its obligations under the Purchase Agreement and who understand they are
not to disclose its contents to any other person or entity without the prior
written consent of Boeing.

 

UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

    

SA-12

Page 1

BOEING PROPRIETARY

--------------------------------------------------------------------------------

LOGO [g188420ex107logo.jpg]

Very truly yours,

 

THE BOEING COMPANY By  

/s/ Chastity Matthews

Its  

Attorney-In-Fact

ACCEPTED AND AGREED TO this Date:  

June 24, 2016

UNITED AIRLINES, INC. By  

/s/ Gerald Laderman

Its  

Senior Vice President - Finance and

acting Chief Financial Officer

 

UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

    

SA-12

Page 2

BOEING PROPRIETARY

--------------------------------------------------------------------------------

Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 1

 

MODEL 737-*** WITH WINGLETS PERFORMANCE GUARANTEES

FOR UNITED AIRLINES, INC.

 

SECTION    CONTENTS     

1

  

AIRCRAFT MODEL APPLICABILITY

  

2

  

FLIGHT PERFORMANCE

  

3

  

AIRCRAFT CONFIGURATION

  

4

  

GUARANTEE CONDITIONS

  

5

  

GUARANTEE COMPLIANCE

  

6

  

EXCLUSIVE GUARANTEES

  

 

UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

    

 

SA-12

Page 1

  

  

BOEING PROPRIETARY

--------------------------------------------------------------------------------

Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 2

 

1 AIRCRAFT MODEL APPLICABILITY

The guarantees contained in this Attachment (the “Performance Guarantees”) are
applicable to the 737-*** Aircraft with winglets and short field performance
enhancement option *** and a maximum takeoff weight of *** pounds, a maximum
landing weight of *** pounds, and a maximum zero fuel weight of *** pounds, and
equipped with Boeing furnished CFM56-7B*** engines.

 

2 FLIGHT PERFORMANCE

 

2.1 Mission

 

2.1.1 Mission Payload

The payload for a stage length of *** nautical miles in still air (equivalent to
a distance of *** nautical miles with a *** knot headwind, representative of a
*** route) using the conditions and operating rules defined below, shall not be
less than the following guarantee value:

 

NOMINAL:

  

***  Pounds

TOLERANCE:

  

***  Pounds

GUARANTEE:

  

***  Pounds

 

Conditions and operating rules:

 

Stage

Length:

   The stage length is defined as the sum of the distances for climb, cruise,
and descent. Takeoff:    The airport altitude is *** feet.    The airport
temperature is ***°C.    The runway length is *** feet.    The runway slope is
*** percent uphill.    The following obstacle definition is based on a straight
out departure where obstacle height and distance are specified with reference to
the liftoff end of the runway:

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

Page 2

  

  

BOEING PROPRIETARY

--------------------------------------------------------------------------------

Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 3

 

   Distance      Height       1.    ***  feet    ***  feet    2.    ***  feet   
***  feet    3.    ***  feet    ***  feet   

 

   Takeoff performance is based on an alternate forward center of gravity limit
of *** percent of the mean aerodynamic chord.    Maximum takeoff thrust is used
for the takeoff.    The takeoff gross weight shall conform to FAA Regulations.
Climbout Maneuver:    Following the takeoff to *** feet, the Aircraft
accelerates to the recommended speed of *** KCAS while climbing to *** feet
above the departure airport altitude and retracting flaps and landing gear.
Climb:    The Aircraft climbs from *** feet above the departure airport altitude
to *** feet altitude at the recommended speed of *** KCAS.    The Aircraft then
accelerates at a rate of climb of *** feet per minute to the recommended climb
speed for minimum block fuel.    The climb continues at the recommended climb
speed for minimum block fuel until *** Mach number is reached.    The climb
continues at *** Mach number to the initial cruise altitude.    The temperature
is ***°C during climb.    Maximum climb thrust is used during climb. Cruise:   
The Aircraft cruises at *** Mach number.    The initial cruise altitude is ***
feet.

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

Page 3

  

  

BOEING PROPRIETARY

--------------------------------------------------------------------------------

Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 4

 

   A step climb or multiple step climbs of *** feet altitude may be used when
beneficial to minimize fuel burn.    The temperature is ***°C during cruise.   
The cruise thrust is not to exceed maximum cruise thrust except during a step
climb when maximum climb thrust may be used. Descent:    The Aircraft descends
from the final cruise altitude at *** Mach number until *** KCAS is reached.   
The descent continues at *** KCAS to an altitude of *** feet above the
destination airport altitude.    Throughout the descent, the cabin pressure will
be controlled to a maximum rate of descent equivalent to *** feet per minute at
sea level.    The temperature is ***°C during descent. Approach and Landing
Maneuver:   

The Aircraft decelerates to the final approach speed while extending landing
gear and flaps, then descends and lands.

 

The destination airport altitude is *** feet.

Fixed Allowances:    For the purpose of this guarantee and for the purpose of
establishing compliance with this guarantee, the following shall be used as
fixed quantities and allowances:    Taxi-Out:   

Fuel                   ***  Pounds

  

Time                ***   Minutes

   Takeoff and Climbout Maneuver:   

Fuel                   ***  Pounds

  

Distance           ***  Miles

  

Time                ***   Minutes

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

Page 4

  

  

BOEING PROPRIETARY

--------------------------------------------------------------------------------

Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 5

 

  

Approach and Landing Maneuver:

  

Fuel                   ***  Pounds

  

Time                ***   Minutes

  

Taxi-In (shall be consumed from the reserve fuel):

  

Fuel                   ***  Pounds

  

Time                ***   Minutes

  

Usable reserve fuel remaining upon completion of the approach and landing
maneuver: *** Pounds

   For information purposes, the reserve fuel is either the greater of a minimum
*** pounds, or is based on a standard day temperature and a) a contingency fuel
allowance equivalent to a continued cruise at the LRC Mach number at final
cruise altitude and weight for a time equal to *** percent of the mission time
from takeoff through the completion of the approach and landing maneuver at the
destination airport, b) a missed approach and flight to a *** nautical mile
alternate, c) an approach and landing maneuver at the alternate airport, and d)
a *** minute hold at *** feet above the alternate airport with an altitude of
*** feet.

 

2.1.2 Mission Payload

The payload for a stage length of *** nautical miles in still air (equivalent to
a distance of *** nautical miles with a *** knot headwind, representative of a
*** route) using the conditions and operating rules defined below, shall not be
less than the following guarantee value:

 

NOMINAL:

  

***  Pounds

TOLERANCE:

  

***  Pounds

GUARANTEE:

  

***  Pounds

 

Conditions and operating rules:

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

Page 5

  

  

BOEING PROPRIETARY

--------------------------------------------------------------------------------

Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 6

 

Stage Length:    The stage length is defined as the sum of the distances for
climb, cruise, and descent. Takeoff:    The airport altitude is *** feet.    The
airport temperature is ***°C.    The runway length is *** feet.    The stopway
is *** feet.    The following obstacle definition is based on a straight out
departure where obstacle height and distance are specified with reference to the
liftoff end of the runway:

 

   Distance      Height       1.    ***  feet    ***  feet    2.    ***  feet   
***  feet    3.    ***  feet    ***  feet    4.    ***  feet    ***  feet   

 

   Takeoff performance is based on an alternate forward center of gravity limit
of *** percent of the mean aerodynamic chord.Maximum takeoff thrust is used for
the takeoff.    The takeoff gross weight shall conform to FAA Regulations.
Climbout Maneuver:    Following the takeoff to *** feet, the Aircraft
accelerates to the recommended speed of *** KCAS while climbing to *** feet
above the departure airport altitude and retracting flaps and landing gear.
Climb:    The Aircraft climbs from *** feet above the departure airport altitude
to *** feet altitude at the recommended speed of *** KCAS.    The Aircraft then
accelerates at a rate of climb of *** feet per minute to the recommended climb
speed for minimum block fuel.

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

Page 6

  

  

BOEING PROPRIETARY

--------------------------------------------------------------------------------

Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 7

 

   The climb continues at the recommended climb speed for minimum block fuel
until *** Mach number is reached.    The climb continues at *** Mach number to
the initial cruise altitude.    The temperature is ***°C during climb.   
Maximum climb thrust is used during climb. Cruise:    The Aircraft cruises at
*** Mach number.    The initial cruise altitude is *** feet.    A step climb or
multiple step climbs of *** feet altitude may be used when beneficial to
minimize fuel burn.    The temperature is ***°C during cruise.    The cruise
thrust is not to exceed maximum cruise thrust except during a step climb when
maximum climb thrust may be used. Descent:    The Aircraft descends from the
final cruise altitude at *** KCAS to an altitude of *** feet above the
destination airport altitude.    Throughout the descent, the cabin pressure will
be controlled to a maximum rate of descent equivalent to *** feet per minute at
sea level.    The temperature is ***°C during descent. Approach and Landing
Maneuver:   

The Aircraft decelerates to the final approach speed while extending landing
gear and flaps, then descends and lands.

 

The destination airport altitude is *** feet.

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

Page 7

  

  

BOEING PROPRIETARY

--------------------------------------------------------------------------------

Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 8

 

Fixed Allowances:

   For the purpose of this guarantee and for the purpose of establishing
compliance with this guarantee, the following shall be used as fixed quantities
and allowances:    Taxi-Out:   

Fuel                   ***  Pounds

  

Time                ***   Minutes

   Takeoff and Climbout Maneuver:   

Fuel                   ***  Pounds

  

Distance           ***  Miles

  

Time                ***   Minutes

   Approach and Landing Maneuver:   

Fuel                   ***  Pounds

  

Time                ***   Minutes

   Taxi-In (shall be consumed from the reserve fuel):   

Fuel                   ***  Pounds

  

Time                ***   Minutes

   Usable reserve fuel remaining upon completion of the approach and landing
maneuver: *** Pounds    For information purposes, the reserve fuel is based on a
standard day temperature and a) a contingency fuel allowance equivalent to ***
minutes of continued cruise starting at the end of the mission cruise and at the
LRC Mach number, b) a missed approach and flight to a *** nautical mile
alternate, c) an approach and landing maneuver at the alternate airport, and d)
a *** minute hold at *** feet above the destination airport.

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

Page 8

  

  

BOEING PROPRIETARY

--------------------------------------------------------------------------------

Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 9

 

2.1.3 Mission Payload

The payload for a stage length of *** nautical miles in still air (equivalent to
a distance of *** nautical miles with a *** knot headwind, representative of a
Mexico City to Newark route) using the conditions and operating rules defined
below, shall not be less than the following guarantee value:

 

NOMINAL:                ***   Pounds TOLERANCE:                ***   Pounds
GUARANTEE:                ***   Pounds

 

Conditions and operating rules: Stage Length:    The stage length is defined as
the sum of the distances for climb, cruise, and descent. Takeoff:    The airport
altitude is *** feet.    The airport temperature is ***°C.    The runway length
is *** feet.    The runway slope is *** percent downhill.    Takeoff performance
is based on an alternate forward center of gravity limit of *** percent of the
mean aerodynamic chord.    Maximum takeoff thrust is used for the takeoff.   
The takeoff gross weight shall conform to FAA Regulations. Climbout Maneuver:   
Following the takeoff to *** feet, the Aircraft accelerates to the recommended
speed of *** KCAS while climbing to *** feet above the departure airport
altitude and retracting flaps and landing gear. Climb:    The Aircraft climbs
from *** feet above the departure airport altitude to *** feet altitude at the
recommended speed of *** KCAS.

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

Page 9

  

  

BOEING PROPRIETARY

--------------------------------------------------------------------------------

Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 10

 

   The Aircraft then accelerates at a rate of climb of *** feet per minute to
the recommended climb speed for minimum block fuel.    The climb continues at
the recommended climb speed for minimum block fuel until *** Mach number is
reached.    The climb continues at *** Mach number to the initial cruise
altitude.    The temperature is ***°C during climb.    Maximum climb thrust is
used during climb. Cruise:    The Aircraft cruises at *** Mach number.    The
initial cruise altitude is *** feet.    A step climb or multiple step climbs of
*** feet altitude may be used when beneficial to minimize fuel burn.    The
temperature is ***°C during cruise.    The cruise thrust is not to exceed
maximum cruise thrust except during a step climb when maximum climb thrust may
be used. Descent:    The Aircraft descends from the final cruise altitude at ***
KCAS to an altitude of *** feet above the destination airport altitude.   
Throughout the descent, the cabin pressure will be controlled to a maximum rate
of descent equivalent to *** feet per minute at sea level.    The temperature is
***°C during descent. Approach and Landing Maneuver:   

The Aircraft decelerates to the final approach speed while extending landing
gear and flaps, then descends and lands.

 

The destination airport altitude is *** feet.

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

Page 10

  

  

BOEING PROPRIETARY

--------------------------------------------------------------------------------

Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 11

 

Fixed Allowances:    For the purpose of this guarantee and for the purpose of
establishing compliance with this guarantee, the following shall be used as
fixed quantities and allowances:    Taxi-Out:   

Fuel                   ***  Pounds

  

Time                ***   Minutes

   Takeoff and Climbout Maneuver:   

Fuel                   ***  Pounds

  

Distance           ***  Miles

  

Time                ***   Minutes

   Approach and Landing Maneuver:   

Fuel                   ***  Pounds

  

Time                ***   Minutes

   Taxi-In (shall be consumed from the reserve fuel):   

Fuel                   ***  Pounds

  

Time                ***   Minutes

   Usable reserve fuel remaining upon completion of the approach and landing
maneuver: *** Pounds    For information purposes, the reserve fuel is either the
greater of a minimum *** pounds, or is based on a standard day temperature and
a) a contingency fuel allowance equivalent to a continued cruise at the LRC Mach
number at final cruise altitude and weight for a time equal to *** percent of
the mission time from takeoff through the completion of the approach and landing
maneuver at the destination airport, b) a missed approach and flight to a ***
nautical mile alternate, c) an approach and landing maneuver at the alternate
airport, and d) a *** minute hold at *** feet above the alternate airport with
an altitude of *** feet.

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

Page 11

  

  

BOEING PROPRIETARY

--------------------------------------------------------------------------------

Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 12

 

2.1.4 Mission Payload

The payload for a stage length of *** nautical miles in still air (equivalent to
a distance of *** nautical miles with a *** knot headwind, representative of a
*** route) using the conditions and operating rules defined below, shall not be
less than the following guarantee value:

 

NOMINAL:                ***   Pounds TOLERANCE:                ***   Pounds
GUARANTEE:                ***   Pounds

 

Conditions and operating rules: Stage Length:    The stage length is defined as
the sum of the distances for climb, cruise, and descent. Takeoff:    The airport
altitude is *** feet.    The airport temperature is ***°C.    The runway length
is *** feet.    The runway slope is *** percent downhill.    The following
obstacle definition is based on a straight out departure where obstacle height
and distance are specified with reference to the liftoff end of the runway:   
                                 Distance                      Height   
          1.             *** feet              *** feet              2.
            *** feet              *** feet    Takeoff performance is based on an
alternate forward center of gravity limit of *** percent of the mean aerodynamic
chord.    Maximum takeoff thrust is used for the takeoff.    The takeoff gross
weight shall conform to FAA Regulations.

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

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Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 13

 

Climbout Maneuver:    Following the takeoff to *** feet, the Aircraft
accelerates to the recommended speed of *** KCAS while climbing to *** feet
above the departure airport altitude and retracting flaps and landing gear.
Climb:    The Aircraft climbs from *** feet above the departure airport altitude
to *** feet altitude at the recommended speed of *** KCAS.    The Aircraft then
accelerates at a rate of climb of *** feet per minute to the recommended climb
speed for minimum block fuel.    The climb continues at the recommended climb
speed for minimum block fuel until *** Mach number is reached.    The climb
continues at *** Mach number to the initial cruise altitude.    The temperature
is ***°C during climb.    Maximum climb thrust is used during climb. Cruise:   
The Aircraft cruises at *** Mach number.    The initial cruise altitude is ***
feet.    A step climb or multiple step climbs of *** feet altitude may be used
when beneficial to minimize fuel burn.    The temperature is ***°C during
cruise.    The cruise thrust is not to exceed maximum cruise thrust except
during a step climb when maximum climb thrust may be used. Descent:    The
Aircraft descends from the final cruise altitude at *** KCAS to an altitude of
*** feet above the destination airport altitude.

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

Page 13

  

  

BOEING PROPRIETARY

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Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 14

 

   Throughout the descent, the cabin pressure will be controlled to a maximum
rate of descent equivalent to *** feet per minute at sea level.    The
temperature is ***°C during descent. Approach and Landing Maneuver:   

The Aircraft decelerates to the final approach speed while extending landing
gear and flaps, then descends and lands.

 

The destination airport altitude is *** feet.

Fixed Allowances:    For the purpose of this guarantee and for the purpose of
establishing compliance with this guarantee, the following shall be used as
fixed quantities and allowances:    Taxi-Out:   

Fuel                   ***  Pounds

  

Time                ***   Minutes

   Takeoff and Climbout Maneuver:   

Fuel                   ***  Pounds

  

Distance           ***  Miles

  

Time                ***   Minutes

   Approach and Landing Maneuver:   

Fuel                   ***  Pounds

  

Time                ***   Minutes

   Taxi-In (shall be consumed from the reserve fuel):   

Fuel                   ***  Pounds

  

Time                ***   Minutes

   Usable reserve fuel remaining upon completion of the approach and landing
maneuver: *** Pounds

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

Page 14

  

  

BOEING PROPRIETARY

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Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 15

 

   For information purposes, the reserve fuel is based on a standard day
temperature and a) a contingency fuel allowance equivalent to *** minutes of
continued cruise starting at the end of the mission cruise and at the LRC Mach
number, b) a missed approach and flight to a *** nautical mile alternate, c) an
approach and landing maneuver at the alternate airport, and d) a *** minute hold
at *** feet above the destination airport.

 

2.1.5 Mission Block Fuel

The block fuel for a stage length of *** nautical miles in still air with a ***
pound payload using the conditions and operating rules defined below, shall not
be more than the following guarantee value:

 

NOMINAL:                ***   Pounds TOLERANCE:                ***   Pounds
GUARANTEE:                ***   Pounds

 

Conditions and operating rules: Stage Length:    The stage length is defined as
the sum of the distances for climb, cruise, and descent. Block Fuel:    The
block fuel is defined as the sum of the fuel used for taxi-out, takeoff and
climbout maneuver, climb, cruise, descent, approach and landing maneuver, and
taxi-in. Takeoff:    The airport altitude is sea level.    The takeoff gross
weight is not limited by the airport conditions.    Takeoff performance is based
on an alternate forward center of gravity limit of *** percent of the mean
aerodynamic chord.

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

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BOEING PROPRIETARY

--------------------------------------------------------------------------------

Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 16

 

   Maximum takeoff thrust is used for the takeoff.    The takeoff gross weight
shall conform to FAA Regulations. Climbout Maneuver:    Following the takeoff to
*** feet, the Aircraft accelerates to the recommended speed of *** KCAS while
climbing to *** feet above the departure airport altitude and retracting flaps
and landing gear. Climb:    The Aircraft climbs from *** feet above the
departure airport altitude to *** feet altitude at the recommended speed of ***
KCAS.    The Aircraft then accelerates at a rate of climb of *** feet per minute
to the recommended climb speed for minimum block fuel.    The climb continues at
the recommended climb speed for minimum block fuel until *** Mach number is
reached.    The climb continues at *** Mach number to the initial cruise
altitude.    The temperature is ***°C during climb.    Maximum climb thrust is
used during climb. Cruise:    The Aircraft cruises at *** Mach number.    The
initial cruise altitude is *** feet.    A step climb or multiple step climbs of
*** feet altitude may be used when beneficial to minimize fuel burn.    The
temperature is ***°C during cruise.    The cruise thrust is not to exceed
maximum cruise thrust except during a step climb when maximum climb thrust may
be used.

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

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BOEING PROPRIETARY

--------------------------------------------------------------------------------

Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 17

 

Descent:    The Aircraft descends from the final cruise altitude at *** Mach
number until *** KCAS is reached.    The descent continues at *** KCAS to an
altitude of *** feet above the destination airport altitude.    Throughout the
descent, the cabin pressure is controlled to a maximum rate of descent
equivalent to *** feet per minute at sea level.    The temperature is ***°C
during descent. Approach and Landing Maneuver:   

The Aircraft decelerates to the final approach speed while extending landing
gear and flaps, then descends and lands.

 

The destination is a sea level airport.

Fixed Allowances:    For the purpose of this guarantee and for the purpose of
establishing compliance with this guarantee, the following shall be used as
fixed quantities and allowances:    Taxi-Out:   

Fuel                   ***  Pounds

  

Time                ***   Minutes

   Takeoff and Climbout Maneuver:   

Fuel                   ***  Pounds

  

Distance           ***  Miles

  

Time                ***   Minutes

   Approach and Landing Maneuver:   

Fuel                   ***  Pounds

  

Time                ***   Minutes

   Taxi-In (shall be consumed from the reserve fuel):   

Fuel                   ***  Pounds

  

Time                ***   Minutes

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

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BOEING PROPRIETARY

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Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 18

 

    

  

Usable reserve fuel remaining upon completion of the approach and landing
maneuver: *** Pounds

   For information purposes, the reserve fuel is based on a standard day
temperature and a) a contingency fuel allowance equivalent to *** minutes of
continued cruise starting at the end of the mission cruise and at the LRC Mach
number, b) a missed approach and flight to a *** nautical mile alternate, c) an
approach and landing maneuver at the alternate airport, and d) a *** minute hold
at *** feet above the destination airport.

 

2.1.6 Operational Empty Weight Basis

The Operational Empty Weight (OEW) derived in Paragraph 2.1.7 is the basis for
the mission guarantees of Paragraphs 2.1.1, 2.1.2, 2.1.3, 2.1.4, and 2.1.5.

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

Page 18

  

  

BOEING PROPRIETARY

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Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 19

 

2.1.7 737-*** Weight Summary - United Airlines

 

     Pounds  

Standard Model Specification MEW

     ***   

Configuration Specification ***

  

*** Tourist Class Passengers

  

*** Engines

  

*** lb (*** kg) Maximum Taxi Weight

  

*** U.S. Gallons (*** Liters) Fuel Capacity

  

***

  

***

     ***   

***

  

***

     ***   

***

     ***   

***

     ***   

***

     ***   

***

     ***   

***

     ***   

***

     ***   

***

     ***   

***

     ***   

***

     ***   

United Airlines Manufacturer’s Empty Weight (MEW)

     ***   

Standard and Operational Items Allowance (Paragraph 2.1.8)

     ***   

United Airlines Operational Empty Weight (OEW)

     ***   

 

     Quantity      Pounds      Pounds  

***

           ***   

***

     ***         ***      

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

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Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 20

 

***

     ***         ***      

***

     ***         ***      

 

2.1.8 Standard and Operational Items Allowance

 

     Qty      Pounds      Pounds      Pounds  

Standard Items Allowance

              ***   

Unusable Fuel

           ***      

Oil

           ***      

Oxygen Equipment

           ***      

Miscellaneous Equipment

           ***      

Galley Structure & Fixed Inserts

           ***      

Operational Items Allowance

              ***   

Crew and Crew Baggage

           ***      

Flight Crew

     ***         ***         

Cabin Crew

     ***         ***         

Crew Baggage

     ***         ***         

Catering Allowance & Removable Inserts

           ***      

First Class

     ***         ***         

Premium Economy Class

     ***         ***         

Economy Class

     ***         ***         

Passenger Service Equipment

     ***            ***      

Potable Water - *** USG

           ***      

Waste Tank Disinfectant

           ***      

Emergency Equipment (Incl. Life Vests & Life Rafts/ELT)

           ***      

Total Standard and Operational Items Allowance

              ***   

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

Page 20

  

  

BOEING PROPRIETARY

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Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 21

 

3 AIRCRAFT CONFIGURATION

 

3.1 The guarantees contained in this Attachment are based on the Aircraft
configuration as defined in *** plus any changes mutually agreed upon or
otherwise allowed by the Purchase Agreement to be incorporated into the
Customer’s Detail Specification (herein referred to as the Detail
Specification). Appropriate adjustment shall be made for changes in such Detail
Specification approved by the Customer and Boeing or otherwise allowed by the
Purchase Agreement which cause changes to the flight performance and/or weight
and balance of the Aircraft. Such adjustment shall be accounted for by Boeing in
its evidence of compliance with the guarantees.

 

3.2 The guarantee payloads of Paragraph 2.1.1, 2.1.2, 2.1.3, and 2.1.4 and the
specified payload of the Paragraph 2.1.5 block fuel guarantee will be adjusted
by Boeing for the effect of the following on OEW in its evidence of compliance
with the guarantees:

(1) Changes to the Detail Specification or any other changes mutually agreed
upon between the Customer and Boeing or otherwise allowed by the Purchase
Agreement.

(2) The difference between the component weight allowances given in Appendix E
of the Detail Specification and the actual weights.

 

4 GUARANTEE CONDITIONS

 

4.1 All guaranteed performance data are based on the International Standard
Atmosphere (ISA) and specified variations therefrom; altitudes are pressure
altitudes.

 

4.2 The Federal Aviation Administration (FAA) regulations referred to in this
Attachment are, unless otherwise specified, the 737-*** Certification Basis
regulations specified in the Type Certificate Data ***.

 

4.3

In the event a change is made to any law, governmental regulation or
requirement, or in the interpretation of any such law, governmental regulation
or requirement that affects the certification basis for the Aircraft as
described in Paragraph 4.2, and as a result thereof, a change is made to the
configuration and/or the performance of the Aircraft in order to obtain
certification, the

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

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SA-12

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Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 22

 

  guarantees set forth in this Attachment shall be appropriately modified to
reflect any such change.

 

4.4 The takeoff portion of the mission guarantees are based on hard surface,
level and dry runways with no wind or obstacles, no clearway or stopway, *** mph
tires, with Category *** brakes and anti-skid operative, *** minute takeoff
thrust, and with the Aircraft center of gravity at the most forward limit unless
otherwise specified. The takeoff performance is based on no engine bleed for air
conditioning or thermal anti-icing and the Auxiliary Power Unit (APU) turned off
unless otherwise specified. Unbalanced field length calculations and the
improved climb performance procedure will be used for takeoff as required.

 

4.5 The climb, cruise and descent portions of the mission guarantees include
allowances for normal power extraction and engine bleed for normal operation of
the air conditioning system. Normal electrical power extraction shall be defined
as not less than a *** kilowatts total electrical load. Normal operation of the
air conditioning system shall be defined as pack switches in the “Auto”
position, the temperature control switches in the “Auto” position that results
in a nominal cabin temperature of ***°F, and all air conditioning systems
operating normally. This operation allows a maximum cabin pressure differential
of *** pounds per square inch at higher altitudes, with a nominal Aircraft cabin
ventilation rate of *** cubic feet per minute including passenger cabin
recirculation (nominal recirculation is *** percent). The APU is turned off
unless otherwise specified.

 

4.6 The climb, cruise and descent portions of the mission guarantees are based
on an Aircraft center of gravity location of *** percent of the mean aerodynamic
chord.

 

4.7 Performance, where applicable, is based on a fuel Lower Heating Value (LHV)
of *** BTU per pound and a fuel density of *** pounds per U.S. gallon.

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

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BOEING PROPRIETARY

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Attachment to Letter Agreement

No. UAL-PA-03784-LA-1601973

CFM56-7B*** Engines

Page 23

 

5 GUARANTEE COMPLIANCE

 

5.1 Compliance with the guarantees of Section 2 shall be based on the conditions
specified in those sections, the Aircraft configuration of Section 3 and the
guarantee conditions of Section 4.

 

5.2 Compliance with the takeoff portion of the mission guarantee shall be based
on the FAA approved Airplane Flight Manual for the Model 737-***.

 

5.3 Compliance with the climb, cruise and descent portions of the mission
guarantees shall be established by calculations based on flight test data
obtained from an aircraft in a configuration similar to that defined by the
Detail Specification.

 

5.4 The OEW used for compliance with the mission guarantees shall be the actual
MEW plus the Standard and Operational Items Allowance in Appendix E of the
Detail Specification.

 

5.5 The data derived from tests shall be adjusted as required by conventional
methods of correction, interpolation or extrapolation in accordance with
established engineering practices to show compliance with these guarantees.

 

5.6 Compliance shall be based on the performance of the airframe and engines in
combination, and shall not be contingent on the engine meeting its
manufacturer’s performance specification.

 

6 EXCLUSIVE GUARANTEES

The only performance guarantees applicable to the Aircraft are those set forth
in this Attachment.

 

Attachment to UAL-PA-03784-LA-1601973

Aircraft Performance Guarantees – Firm 737-*** Aircraft

AERO-B-BBA4-M15-0858

  

SS15-0360

    

 

SA-12

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BOEING PROPRIETARY