B737 Cockpit Companion

Version 5.2.0, June 6, 2024, DB 2366 Update History Jun 2024 KA Assigned correct fleet IDs to the NGs for transponders, wx radars, ADFs, Radio Tuning Panels, Oil quantity units (qts/liters), and Thrust Mode Display SW NG Assigned correct fleet IDs for: … Radio Tuning Panels … Exterior light control panel – right … Emergency Lighting and Passenger Signs … Air Conditioning Controls … Bleed Air Controls … AC & DC Meters includes CAB UTIL / GALLEY PWR and single bat / dual bat airplanes … operating equipment during Loss of All Generators … Thrust Mode Display … AC & DC Meters selectors Approach Reference / Navaid Identifier encoding and Scale ID Annunciation has been updated to B737-800. APU fuel feed includes APU DC fuel pump (N270WN, N271LV, N798SW). All Airplanes A drawing of the Cargo Electronic Unit has been added to the Cargo Fire Panel, with an explanation on how it is used by maintenance. The drawing of the Cargo Fire panel has been improved, too. Rewrote/reorganized Command Speed Limiting, Reversion Modes, Placard Limit Reversion, and Minimum Speed Reversion. CALL System If you have a blue CALL light on fwd overhead the description of the CALL system has been added to it. If you have the integrated ACP, the description of the CALL system has been added to the white C in the transmitter selector switch. FLR Airplane The Thrust Mode Display has been corrected for your fleet.

Version 5.1.6, May 17, 2024, DB 2352 - Consolidated lights above the CAPT and F/O ND displays. - The Cabin Altitude Warning System has been added to the Cabin Altitude Panel System Notes - A diagram of all three scenarios of the Cabin Altitude Pressure switches has been added to Diagrams. - Added paragraph about A/T engagement in MCP SPD. - AFS OPS in WINDSHEAR has been added. - The EEC idle operation has been re-written. - The description of the APU protective shutdown has been expanded a bit. - A note has been added to LE FLAPS EXT light and LE FLAPS TRANSIT lights - Elevator Feel Shift: Re-written and improvements have been made to 2 diagrams. - A description of Automatic Navigation Realignment (ANR) mode has been added to the IRS Mode Selector System Notes. - The RTO wheel speed has been updated from 90 kts to 88 kts. MAX Nose Wheel Steering Angle: Changed the effective nose wheel steering angle from 75° to 73°. In the Bleed Air Control panel System Notes, two paragraphs had dropped out in the last update. These have been replaced. Equipment Cooling: Added FORWARD CARGO COMPARTMENT SMOKE PENETRATION PREVENTION to the Equipment Cooling system. AA - Revision 023.1 has been covered. - A correction to the list of what can cause the A/P to disengage has been made. - A statement regarding V/S has been added to the Autothrottle Engagement list. - Corrected a statement under APP mode regarding After Loc and G/S capture. - 3DM-3VM Cockpit Voice Recorder: Some changes were made to the TEST switch. - Added “90 day battery” to the digital CVR underwater locator beacon. - TCAS Aural Advisory: Removed the TCAS aural advisory ADJUST VERTICAL SPEED, ADJUST VERTICAL SPEED.

- Fixed a bug in which some content would not display correctly. - Fixed a bug in the Airworthiness Directives section where a font was displaying too larger. - Added diagram for tail skid (NG and MAX). - Other editorial improvements.

Version 5.1.0, April 2, 2024, DB 2330 Update History APR 2024 Software - We’re pleased to announce the addition of the Flair 737-8 MAX to our fleet! Flair is an ULCC based in Toronto. - We are removing the Aeroflot airplane from distribution, due to the war. - We’ve added the three Airworthiness Directives and the January Emergency AD (door plug) published by the FAA since Sept 2023. - We’ve updated the airplane descriptions for all the airplanes. - We’ve fixed the Dark Mode issues with Flash Cards. Diagrams - Two diagrams have been added: Probe Heat Capt Pitot Study and Probe Heat TAT Study -The ACP ALT / NORM switch has been re-written, separating the R/T – I/C switches and the RADIO – INT switches. - Re-wrote and added diagrams to Capt Pitot Probe light and the TAT Test switch on the Window Heat panel. - Added the Enhanced Bank Angle Warning description to the Attitude Indicator. - Re-wrote the IAS/MACH description. - Added a switch/wire diagram to the Master Lights Test switch and Diagrams tab. - IRS FAULT NNC: Added the IRS FAULT NNC MAX & NG NNC to the appropriate FAULT light. - Added a wire diagram to the Wheel Well light switch. - Added a drawing of the sensing element for the wheel well fire detection. - MAX White Tail -8: Replaced the Capt ND Split DU. - Updated the All Generators Inop - Improved the drawing of the cargo fire bottles. - Replaced 3 DC diagrams. - Numerous minor fixes.

All NG/MAX Updated the Engine Fuel & Oil Schematics for NG and MAX. Added the Engine Fuel Schematic and Engine Oil Schematic. Re-wrote the Yaw Damper description. Many other minor editorial changes.

- - - - - - - - - - - - - - - - FEATURE WORK - - - - - - - - - - - - - - - - NG Updated the EFIS Control Panel CTR switch to show several VSD drawings. MAX Updated the EFIS Control Panel VSD switch to show several VSD drawings. Big thank you to the pilot who sent the photos used in creating these drawings. If you have an interesting VSD display take a photo (if safety is not a factor) and send. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - FMC Guide: Quite a bit of work has been done to the TEMP COMP feature on Approach Ref 2/2. Several Quizzer improvements; thanks to users who noted problems. Diagrams ATA-24 Electrical: Updated the symbols for the Inverter RCCB, the Dual Battery RCCB, and energized relays. ATA-24 Electrical: Moved the drawings of the EE racks and PPD 1 & 2 from Equip Cooling System Notes to the Bus Switching Panel System Notes. Re-organized DC System Notes. Made improvements to the schematics and to the operation of the Bus tie relay (R9). Three schematics for the Bus tie relay: R9 Closed, Open, and Single electrical source. ATA-36 Pneumatics: Added Ground Pneumatics and External Air Cart Use to Pneumatics System Notes ATA-34 Navigation: Added Inadvertent Selection of Attitude Mode (while on the ground) to the ATT switch. ATA-28 Fuel: Added Ground Transfer of Fuel to the Refueling System Notes. Added a Fuel Balancing procedure to the Fuel System Notes. Browse > Fwd Ovhd > Fuel Control panel (twice) > System Notes. All NG ATA-36 Pneumatics: All reference to MAX components/differences are removed. For MAX bleed/pneumatics refer to the -8 MAX airplane. NG (with options) and MAX ATA-34 Navigation: Small update to the RAAS Callouts, Alerts and ND Messages during Taxi and Takeoff of RAAS Airports NG and MAX ATA-30 Ice and Rain: Added Wing Anti-ice and Engine Anti-ice Operation On the Ground, In Flight, and Fan Ice Removal. ATA-34 Navigation:  Added the Look Ahead Terrain Alerts chart to the Ground Proximity System Notes. Added the Terrain Avoidance procedure after the Look Ahead Terrain Alerts chart. ATA-36 Pneumatics: Improved the description of the Isolation valve and added the MEL (educational purposes). ATA-24 Electrical: Added an Electrical Power-Up procedure to the BAT switch. ATA-26 Fire Protection: Added MEL procedures if the Wing-Body Overheat is inop. Ground crew call horn has been removed from the Equipment Cooling System Notes It has been added to each component that it’s related to: Battery switch Equipment Cooling OFF light IRS MSU ON DC light. MAX Airplane Reorganized and re-wrote most of Pneumatics System Notes. Many new drawings. Also improved the ACM drawing. ATA-24 Electrical Added a drawing of the EE racks to the Diagrams and to the Bus System Notes ATA-34 Navigation: Changed the radar unit to the RDR-4000. ATA-23 Comm: The ATC Uplink message has been added to the Captain’s Engine Display. ATA-28 Fuel: When you touch the Fuel Control panel you will now get 3 choices: Fuel Control panel, Refueling panel, and the NGS. ATA-34 Navigation: Added kgs option to the Refuelling panel and made other minor additions. SW Aircraft ATA-34 Navigation: Changed the radar unit to the RDR-4000. Took the VSD out of the -700. AA Aircraft Added the Battery Warning System to the Battery switch description. Updated the GPWS SYS TEST switch. ATA 29 Hydraulics Corrected the description of the EMDP OVERHEAT light Weather Radar Panel Added ships 3LL - 3VM to the list of WX mode switch differences

Update History Nov 2023 - 6 new Quizzer questions - Autopilot Disengagement: Corrected a mislabeled Stab Trim Cutout switch on MAX - Changed STAB TRIM AUTOPILOT to STAB TRIM PRI or B/U All NG Aircraft Replaced the Secondary Engine Indications drawing. All Aircraft - The A/C System notes are undergoing a complete re-write with drawings being changed/added. This will take until the next update to stabilize. - Most of the individual switches and lights on this panel have been re-written. Diagrams - A new convention for showing an energized vs non-energized solenoid valve is used. It takes less space. - Work continues to improve the Hydraulics 0 thru 10. - Most of the hydraulic drawings in that group 0-10 do not yet have the main Yaw damper correction and the Flap priority valve/flow limiter (#16). ATA 27 Flight Controls These Flight Controls drawings have been improved, to include adding the Flap priority valve and flow limiter. 1a Flaps up 1b Flaps EXT 1c Flaps FULL EXT 1d Flaps Retract 1e Autoslats Activated 1e UCM & CDV LEDs TE FLAP CONTROL VALVE Rewrote the description and improved the drawing. Autoslat System Description of the Autoslat system has been moved from the bottom of Flight Control System Notes to the top. FLAP LEVER SYSTEM NOTES Replaced the LE FLAP & SLAT CONTROL VALVE TE FLAP CONTROL VALVE (5), and TE FLAP BYPASS VALVE drawings. AA - Updated the All Generators Inop list. - Replaced the NG Secondary Engine Indications

Update History September 2023 - Raised the compatibility floor to 15.6, in keeping with our "two-back" compatibility policy. This will allow us to use more modern iPadOS features and provide a better and more stable user experience. - We repaired (again) a Dark Mode glitch in the Flash Cards review feature. MAX Aircraft A statement regarding use of EAI in non-icing conditions has been added to the Engine Anti-Ice switches. It is in your Limitations. All Aircraft I’ve made changes to the description of the DC bus tie relay. This has also affected the description and NNC for the TR UNIT light. 3 scenarios; Normal Ops, Glideslope Captured, and Single Electrical Source Diagrams Thanks to a reader who caught a mistake in a Hydraulic system drawing - 8 Loss of B on Takeoff. The stby system was not activated (red line). More on Diagrams All of the other Hydraulic diagrams, - 0 thru - 10 have been improved. More complete drawings of the Autoslat control valve, for those who operate in the “weeds” like I do once in a while.

BITE public beta. Additional airworthiness directives Improved brake system diagram. HOT WEATHER Ops moved to pneumatics system Brake system accumulator check change. Brake Checks Change to AA: glideslope to be inhibited prior to localizer capture

What’s New Version 4.7.1, May 25, 2023, DB 2183, Update History May 2023 We ran into a bug in our development system, so the MAINT/BITE feature is about four weeks behind. It was quite laborious working around it. We’re entering beta testing next week, and hope to have it ready for the June or July release. FAA released three new ADs this week, and are included in the ADs section. Per our two-back policy, we’ve finally dropped support for iOS 13 and earlier. All NG/MAX Corrections to the Landing Gear: • Some airplanes were missing the paragraph on the Lever Lock Override Trigger . • There was an error regarding the tail skid. • The explanation of the Landing Gear Selector Valve was a mess. • Nose Wheel Steering switch • Rudder pedals • Brake System Notes • Accumulator. Engine Display Control Panel System Notes or Brake System Notes. Antiskid System Notes - cleaned up/rewrote the Antiskid System Notes. • Added APU BITE TEST CDUs showing APU FUEL FLOW under 4 different configurations: • Added a diagram of the NGS. • Added right side pneumatic diagrams of the NG and MAX bleed air systems. Alaska Airlines airplane • Added the optional cabin air ozone scrubber to the Alaska airplane, the MAX, and the two (with options) airplanes. Quizzer additions