B737 Cockpit Companion
Education
USD 79.99 · In-App Purchases
7.0.5: Hotfix: restored full database.
7.0.4: - Hotfix to address subscription Restore Purchases capabilities.
B737 Cockpit Companion for iPad is a conversion of Bill Bulfer's B737 NG Cockpit Companion book series to an iPad app. It covers the NG, Classics, and the 737 MAX.
Since 1998, B737 Cockpit Companion has been a valued resource for airline pilots worldwide. It is a convenient accessible guide to systems, incorporating notes on functionality, "theory of operation", and Bill's extensive experience as a line pilot with a major US carrier.
B737 Cockpit Companion steps far beyond the "need to know" philosophy that is characteristic of modern systems training, and which frustrates many line pilots.
The app is much more than an "eBook." At its heart is a powerful database engine that allows a tremendous number of configuration options to be customized without forcing the user to wade through clutter: When you browse a control head, for instance, you will see only content related to that control head.
The app features a touch-based navigation scheme, so you can start with the top-level cockpit view, and find notes specific to the panel you deal with.
It also contains a number of reference options, so you can look up information without having to work through the control panels.
The major features include:
- Extensive coverage of the B737-600, -700, -800, -900, the BBJs, the 737 MAX, and the Classic EFIS/EIS.
- The complete text of the B737 NG Cockpit Companion print version--and more.
- All-new, high-resolution graphics detailing every panel and control head.
- A note-taking capability.
- The ability to create your own flashcards.
- An extensive index of over 700 items, linked to the main text.
- A circuit breaker locator.
- Bill's high-resolution, vector-based schematics.
- The content of the B737 Alerts app—a $15 value—optimized for the new database.
- An extensive glossary.
- A database update feature to help keep the database up to date (requires a wireless connection).
Of interest to students or prospective pilots, we also include:
- A sample Limitations function.
- A sample Master Minimum Equipment List, based on FAA Rev 55a.
- An ATA chapter database.
As with all products of this type, this program is for informational purposes only. Your FAA-approved company flight manual is the final authority as to the safe and correct operation of your airplane.
One optional in-app subscription, "Pro App", is available. This includes the text of FMC Guide, Bill Bulfer's book on the Flight Management System; and Quizzer. This is a convenient way of reviewing systems operation, and was written by Bill. Pro Pilot also includes a BITE CDU emulator and Airworthiness Directives. As we add new features, we will be adding them under Pro Pilot.
• The subscription lasts one year.
• Payment will be charged to your iTunes Account at confirmation of purchase
• The subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period.
• Your account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal at the time.
• Subscriptions may be managed by you, and auto-renewal may be turned off by going to your iTunes Account Settings in System Settings after purchase.
NOTE: The app is generally supported for the current version of iOS, the previous version, and the iPad hardware that supports those versions.
EULA: http://www.fss.aero/EULA.html
more 7.0.5: Hotfix: restoring full database. Used a limited database for testing previous issue.
7.0.5 2 Aug
- Hotfix to address subscription Restore Purchases capabilities.
- Cleaned up a dark mode UI issue in Quizzer.
- Resized various minor items in Quizzer to accomodate iOS style changes since 15.0.
7.0.4 31 Jul
- iCloud support! Finally!
- Tweaked Engine Display Advisory Messages
- New Chapter conversions
- Various content improvements for all aircraft and AA in particular.
- FMC guide suggestion on how to to review flight path in light of 767 incident at Newark.
7.0.0 2 Jul
NG and MAX Aircraft
• Overboard Exhaust Valve (OEV)description has been re-written
• Air Conditioning Air Temperature Indicator — description of the indicator has been improved
• STANDBY HYD COMPONENTS ON THE RUDDER has been moved from the Flight Control System Notes to the Rudder System Notes
• The paragraph on Standby Yaw Damping has been moved from the Rudder System Notes to the Flight Control System Notes
• AC System Notes have been moved from the AC & DC Metering Panel the AC System Notes are now in the Bus Switching System Notes.
• DC system is completely in the AC & DC Metering Panel
• There is little AC information in the AC & DC Metering Panel
• The AC & DC Metering Panel has been improved with the addition of the Chapters feature
• The Bus Switching Panel has been improved with the addition of the Chapters feature
For Information Purposes Only
• Loss of Both Engine Driven Generators NNC has been updated
NG Aircraft
• COWL ANTI-ICE and COWL VALVE OPEN lights:clarified the description.
SW Aircraft
• Water Vapor Sampling System: Description has been added to the NG CAB/UTIL switch as that is what controls the power to it.
AA Aircraft
• Added the Battery Warning System to the electrical system.
• CAB/UTIL and IFE/PASS SEAT switches: Corrections were made to certain fleets.
• Exterior Lighting Systems. 3MV - 3VM exterior lighting system has been added to the Exterior Lights System Notes
• Autopilot / Autothrottle indicator (Autoflight status annunciators): MAX Autopilot / Autothrottle indicator has been added.
• 3AA-3PX MCP (Honeywell): A note has been added to the LNAV Mode article.
• Integrated Power Supply switches: This has been described in a new bulletin.
• This graphic is temporarily placed in the Cabin cluster.
Flair Aircraft
• IFE/PASS SEAT switch: An addition was made to the 1B390 - 1J023, 1K001 - 1L078 fleet
6.8.0 21 Apr
- Quizzer now presents correctly for the Flair retail version.
- System Notes option now available in the Extras area.
- More on the hot cabin issue.
- Many under-the-hood editorial changes.
6.7.2 1 Apr
- MMELs updated
- AD update
- MAX Hot Cabin issue discussion
- LRD issue discussion updated
- Chapters conversion is continuing.
6.7.1 11 Mar
Version 6.6.0, December 30, 2025, DB 2760
DEC ’25 Update
All Aircraft
• The Rudder Trim technique has been changed.
• Added a photo of the dual loop wheel well fire detectors.
• Corrected the “Bleeds Off Takeoff” title. Steps for “Unpressurized Takeoff or Landing” follow.
• Added a description of the Flight Crew Oxygen System to the Oxygen System Notes.
All NG and MAX Aircraft
• Engine Anti-ice on-ground and Fan Ice Removal have been taken out of the Engine Start Switch System Notes and put in the Wing/Engine anti-ice System Notes.
• Approximately 20 new “chapters” have been added to the Wing/Engine Anti-ice Panel System Notes.
AA Aircraft
• Reorganized and expanded the description of the 3RA-3VM Right AUX HGS Annunciator panel.
• Rewrote paragraph on Cargo Compartment Fire Suppression.
• Added the description of the Global Aeronautical Distress and Safety System to the 3UN-3VM ELT System Notes.
• Small change to the NO VSPD definition under the Takeoff Ref Speeds.
• Slight addition to the NG pfd failure flags.
KIA Aircraft YL011
• Added the description of the Forward Cargo Compartment Smoke Penetration Prevention.
White Tail -8 BBJ
• Added the APU BLEED VLV CLOSED light to the upper right corner of the fwd overhead panel.
• Added the CABIN SEATS and INTERIOR DOORS lights to the door annunciator panel.
AS Aircraft
• Added the NG differences to the Cargo Fire Panel System Notes.
COPA
• Placed the ACPs in the left and right side walls.
Most Aircraft
• Most Cargo Fire Panel System Notes have been rewritten.
FMC GUIDE
• More information has been added to the GPS UPDATE ON/OFF LSK on the NAV OPTIONS page.
6.6.0 1 Jan
All NG and MAX Aircraft
* Every graphic in the Flap Lever System Notes has been updated, and most with new MAX photos.
* A front view photo of the nose gear has been added to the Tiller along with descriptions of the compensator and load damper. Browse > Tiller (twice)
* A new photo of the Landing Gear Transfer Valve has been added.
* The photos of the A and B EDP SOVs has been replaced with new ones.
• Hydraulic Reservoir Pressurization System has been re-written.
* Hydraulic System Notes has several new photos besides the Reservoir Press System.
All MAX Aircraft
* A Ground Spoiler graphic and photo of the Ground Spoiler Control Module has been added.
* These System Notes now have the latest “Chapters” feature from Robert.
SW MAX
• Corrected the mis-named fleet numbers in the GPWS System Notes
All NG and MAX
* Re-wrote the Stall Warning Test switches 1 and 2.
* Corrected the Index for the GPWS System Notes so that it is not alphabetical.
* Changed description of Takeoff Flap Settings, adding more choices.
AA Aircraft
* Corrected the fleet IDs on the ELT
* The De/Antiicing Allowance Times Table has been replaced.
* The procedure for a Bleeds Off Takeoff with the APU inop or de/anti-icing fluid having been applied has been added.
6.5.5 27/11/2025
- New System Note feature.
- Many editorial improvements.
6.5.0 17/10/2025
6.3.1: Hotfix to address an issue with displaying system notes. Bill has also tweaked a number of illustrations.
Update History August 2025
- rewritten the renderer for the system notes (again), which should eliminate a clip-off issue some of you have reported.
- also introduced a new feature, segmented system notes.
All NG / MAX Aircraft
• Along with the new renderer, on my side, each graphic must be adjusted and placed it the desired place. There are hundreds and this job is not yet finished. Let me know if you run across a graphic that looks to be too large.
• The Air Conditioning Control Head Notes has been re-organized.
• The Takeoff Configuration Warning drawing has been moved from the forward thrust levers to the TAKEOFF CONFIG warning light on the left and right forward panels.
• An AC electrical diagram has been added to the APU GEN OFF BUS light.
• Automatic Flight Takeoff Profiles for TO/GA Takeoff and F/D Takeoff Mode with LNAV and VNAV Armed have new graphics and has been re-organized.
• A diagram has been added to show the power source for the ignition igniters.
• Hydraulic Control Panel
- Added the description of the Pressure Transmitter that is on both A and B Pressure Modules.
• Standby LOW QUANTITY light
- Improvements have been made to the diagram and added the Flow Limiter to the A hydraulic system line going to the PTU control valve
• Air Conditioning Panel
- The Fan Bypass Check Valve was added to all air conditioning diagrams.
MAX Aircraft
• Flight and Ground Spoilers
• Maneuver Load Alleviation System
• SPEED BRAKE EXTENDED light (P3 panel)
Diagrams
• Improved diagrams for the MAX Flight Spoilers, Ground Spoilers, and added a MAX combined Spoilers diagram.
MAX with Head-Up Display (HUD)
Alaska Airlines airplane
- We are reorganizing the Alaska fleet. The MAX will be the default airplane with the NG variants presented as Differences. This is a long project and will be in better shape in one or two more updates. The Alaska airplane is the B737 -8.
Classic Aircraft
• Corrected the Flap Load Relief Table
The flap load relief functions only at flaps 40.
6.3.1 02/09/2025
Update History August 2025
- rewritten the renderer for the system notes (again), which should eliminate a clip-off issue some of you have reported.
- also introduced a new feature, segmented system notes.
All NG / MAX Aircraft
• Along with the new renderer, on my side, each graphic must be adjusted and placed it the desired place. There are hundreds and this job is not yet finished. Let me know if you run across a graphic that looks to be too large.
• The Air Conditioning Control Head Notes has been re-organized.
• The Takeoff Configuration Warning drawing has been moved from the forward thrust levers to the TAKEOFF CONFIG warning light on the left and right forward panels.
• An AC electrical diagram has been added to the APU GEN OFF BUS light.
• Automatic Flight Takeoff Profiles for TO/GA Takeoff and F/D Takeoff Mode with LNAV and VNAV Armed have new graphics and has been re-organized.
• A diagram has been added to show the power source for the ignition igniters.
• Hydraulic Control Panel
- Added the description of the Pressure Transmitter that is on both A and B Pressure Modules.
• Standby LOW QUANTITY light
- Improvements have been made to the diagram and added the Flow Limiter to the A hydraulic system line going to the PTU control valve
• Air Conditioning Panel
- The Fan Bypass Check Valve was added to all air conditioning diagrams.
MAX Aircraft
• Flight and Ground Spoilers
• Maneuver Load Alleviation System
• SPEED BRAKE EXTENDED light (P3 panel)
Diagrams
• Improved diagrams for the MAX Flight Spoilers, Ground Spoilers, and added a MAX combined Spoilers diagram.
MAX with Head-Up Display (HUD)
Alaska Airlines airplane
- We are reorganizing the Alaska fleet. The MAX will be the default airplane with the NG variants presented as Differences. This is a long project and will be in better shape in one or two more updates. The Alaska airplane is the B737 -8.
Classic Aircraft
• Corrected the Flap Load Relief Table
The flap load relief functions only at flaps 40.
6.3.0 28/08/2025
- Added LRD and "Load Reduction Device" to the Index, so as to be easier to find.
- Added a Special Information Airworthiness Bulletin covering synthetic fuel.
- A CAUTION has been added to the IRS MSU ALIGN position.
- PILOT CALL light: A diagram has been added to describe how the PILOT CALL light works.
- GRD CALL button: A power diagram has been added to the description of the Ground Crew Call Horn.
- ON DC light: A diagram has been added to the description of the ON DC light.
- Many connections have been made to the GRD PWR switch.
NG and MAX aircraft
- The Overboard Exhaust Valve (OEV) description has been re-written/expanded and moved to the Equipment Cooling System Notes.
- The Altitude Alerting Systems drawing has been improved.
- A diagram has been added describing how the “2-bottle” and “3-bottle”cargo fire systems work.
(The only 3-bottle system in the app is the BBJ B737-700.)
Cargo Fire NNC [As usual all NNCs in the app are for educational purposes only and are NOT to be used]
A step has been added to note the exact time the DISCH switch is pushed.
- A description and diagram of the Light Plate Power Connector has been added to most of the “+” symbols that are in the cockpit. I may have missed a few. You will find these “+” symbols only on Light Plates. This is mainly for maintenance as they must be very careful in removing a Light Plate. If a light plate goes out, you might be able to get it illuminated again by pressing on the +.
- External Power receptacle (P91) has been added to the Ground Power System Notes.
Alaska Airplane
All aircraft dimensions have been added.
Our goal is to have the Alaska MAX -8 & -9 airplanes in the app on the next update.
The NG airplanes will be brought is as Differences. Lot of work.
6.0.5 14/06/2025
- Clarified cargo fire bottle time options
- AD 2025-07-03 (fuselage inspection)
5.9.8 17/04/2025
Same as 5.9.5, plus a hotfix to address a failure at startup.
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APP tweak
FMC GUIDE TAKEOFF REF 1/2
All NG and MAX aircraft: A drawing has been added to the Pack switches showing the difference in the takeoff N1s with normal ops and with one pack ions, NG and MAX.
5.9.6 26/03/2025
APP tweak
FMC GUIDE TAKEOFF REF 1/2
All NG and MAX aircraft: A drawing has been added to the Pack switches showing the difference in the takeoff N1s with normal ops and with one pack ions, NG and MAX.
5.9.5 21/03/2025
- All aircraft: The diagram of the LIGHTS TEST switch has been updated a bit.
- ENGINE FIRE or Engine Severe Damage or Separation Hypothetical NNC for discussion
- Smoke, Fire or Fumes Hypothetical NNC for discussion
- MAX: Engine Start Levers clarification.
5.9.2 30/01/2025
- Completed vector diagram updates.
- Updated MAX Load Reduction Device article for the LEAP 1B
MAX BBJ: The White Tail -8 is being changed to a BBJ -8.
All Airplanes
Pressurization: The Auto Pressurization Mode of operation diagram has been added to the Cabin Altitude System Notes.
Flight Controls: The Leading Edge Flaps Transit NNC has been added to the LE FLAPS TRANSIT light. (for educational purposes only; use your company's NNC!)
Flight Controls: The LE SLATS diagram at the end of the Leading Edge Devices System Notes has been much improved.
Fire Protection: The description of the Cargo Fire DET SELECT switches has been re-written (corrected) with new diagrams.
SW MAX
Engine Starting: The engine start switch option was changed from AUTO to OFF.
Electrical: The ISP Port has been added to the description of the IFE / PASS SEAT switches.
5.9.0 21/12/2024
- Discussion of Load Reduction Device
- Electrical, hydraulics, and anti-ice articles
- Continuing with the graphics upgrade project
5.8.6 23/11/2024
- Continuing with updating graphics in Control Head and System Notes
- Fixed cargo fire control head diagram (was displaying wrong feature)
- Reorganized Standby Power Check
5.8.5 30/10/2024
- Converted a couple hundred more raster diagrams to vector diagrams.
5.8.1 16/10/2024
- Mostly converting bitmapped diagrams to vector diagrams.
- Minor improvement in those diagrams as we go along.
5.7.0 26/09/2024
5.6.2
- Hotfix to fix issues with Index and Alerts.
5.6.1:
- Hotfix to address capabilities issue with 5.6.0.
5.6.0:
- Many bug fixes and improvements.
- Much editorial content improvement across the fleet.
5.6.2 06/09/2024
5.6.1:
- Hotfix to address capabilities issue with 5.6.0.
5.6.0:
- Many bug fixes and improvements.
- Much editorial content improvement across the fleet.
5.6.1 04/09/2024
- Many bug fixes and improvements.
- Much editorial content improvement across the fleet.
5.6.0 01/09/2024
Version 5.2.1:
Created distinct SWA MAX 8 airframe, based on the earlier combi airframe.
5.2.1 02/07/2024
7.0.5: Hotfix: restoring full database. Used a limited database for testing previous issue.
more Version 7.0.5 2 Aug
Data Not Collected The developer does not collect any data from this app.