--- title: "737 Master Caution - Reviews, Revenue and Downloads in United States | Apple App Store" description: "This app references more than 200 warning lights and messages of the B737 Classic, NG and MAX families. You are a pilot preparing your initial 737 type rating training, or an aviation enthusiast, or" --- # 737 Master Caution — United States > for Classic, NG and MAX series ![737 Master Caution App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/2c/9c/9f/2c9c9f92-08a2-e379-feef-64b680443813/AppIcon-1x_U007epad-0-1-85-220-0.png/434x0w.png) **Developer:** [LAGOO SARL](https://apptail.io/developer/lagoo-sarl-jtf) **Category:** Education **Rating:** 4.0/5 (4 ratings) **Price:** Free **Bundle ID:** com.lagoo.mastercaution **Store:** Apple App Store **Country:** United States **Version:** 1.4.1 (released 2025-07-06) **Original Release:** 2023-08-02 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6455042070) **AppTail Page:** [https://apptail.io/app/737-master-caution-eJhn/united-states](https://apptail.io/app/737-master-caution-eJhn/united-states) ## 737 Master Caution Description This app references more than 200 warning lights and messages of the B737 Classic, NG and MAX families. You are a pilot preparing your initial 737 type rating training, or an aviation enthusiast, or a flight simulator fan. You should enjoy this app. - Warning lights are grouped by FCOM chapters. - You may filter warning lights by airplane family / generation (Classic, NG or MAX). - Full text search to find a specific light. - Add your personal notes for each light and use the app as a notebook. - Place a bookmark to specific warning lights. You will also find 4 other tools, as reference : - A complete list of abbreviations with more than 400 definitions. - Full explanation of more than 100 FMC messages. - Position of more than 500 circuit breakers, sorted by ATA codes or by panels. - List of all electrical buses and more than 500 associated services. A great tool during your initial type rating training or during a refresher later. For training purposes ONLY. Do not use in-flight. Should you spot any error or have any suggestion, feel free to contact : support@babdreams.com Enjoy. ## 737 Master Caution Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/96/26/f4/9626f43b-d412-2687-6c87-6a36e315705e/774e0291-4c2a-4044-8746-9a0ca436b0ff_iPhone14-1.png/1242x2688.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/26/87/76/268776cd-89ed-3f13-a61c-6e30ecb7943c/5ba9dabc-2660-49d5-9ca8-099d56f7bb7f_iPhone14-10.png/1242x2688.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/e4/4f/7e/e44f7e14-e1c7-e4ad-9284-a1fab67e298c/d186afc8-b4de-4ec0-82a4-6086f565f62d_iPhone14-2.png/1242x2688.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/94/74/e6/9474e6fe-64b6-85a7-1ab3-6af8c6b60d92/d0f36f09-e3c5-4dd1-b92d-4fb5f8d5e498_iPhone14-3.png/1242x2688.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/63/42/ed/6342ed95-77f0-755e-33bb-b44526262856/57386406-3567-4836-90df-eccb87a90dc0_iPhone14-4.png/1242x2688.png) - [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/c2/eb/1d/c2eb1d53-6611-d181-84c5-066cfe48cd6f/bd4a6ced-036e-4905-bc24-c77042588bed_iPhone14-5.png/1242x2688.png) - [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/c0/a5/44/c0a544dd-edb8-1f08-cf0c-0a8c3b4b6db0/2c72ca00-46ad-412c-87ff-85de8650f66b_iPhone14-6.png/1242x2688.png) - [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/d4/0b/a7/d40ba71c-78cc-1ded-457f-76bca4e88ed4/7c0806e6-e45f-4a4b-9607-37a1a6d1d22a_iPhone14-7.png/1242x2688.png) - [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource116/v4/93/c2/78/93c27876-6046-a30b-e4be-53441c73264f/4a4c72fb-a716-4004-b1aa-e61db341224a_iPhone14-8.png/1242x2688.png) - [Screenshot 10](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource126/v4/f5/46/3d/f5463d1e-ba8e-116c-4ff1-be5ae001a8d9/015a2095-c9f7-4dfc-9d22-c0d4e20be4e0_iPhone14-9.png/1242x2688.png) ## 737 Master Caution Rating Breakdown in United States - 5 stars: 3 (75%) - 4 stars: 0 (0%) - 3 stars: 0 (0%) - 2 stars: 0 (0%) - 1 stars: 1 (25%) ## 737 Master Caution Discovered Keywords - boeing 737 ## Apps Similar to 737 Master Caution - [737 Handbook](https://apptail.io/app/737-handbook-tEbd/united-states) - [B737 MRG](https://apptail.io/app/b737-mrg-FEbd/united-states) - [B737 Performance Handbook](https://apptail.io/app/b737-performance-handbook-OFdd/united-states) - [iBOEING Type Rating Prep](https://apptail.io/app/iboeing-type-rating-prep-Saxe/united-states) - [B-737 Aircraft Apps](https://apptail.io/app/b-737-aircraft-apps-apOe/united-states) - [Boeing LoadSheet](https://apptail.io/app/boeing-loadsheet-PrRe/united-states) - [iTrain B737MAX](https://apptail.io/app/itrain-b737max-utRe/united-states) - [VRflow B737NG](https://apptail.io/app/vrflow-b737ng-vocl/united-states) - [VRflow B737MAX](https://apptail.io/app/vrflow-b737max-Lrcl/united-states) - [B737 Autopilot Trainer](https://apptail.io/app/b737-autopilot-trainer-OHjm/united-states) ## 737 Master Caution Available In - [United States](https://apptail.io/app/737-master-caution-eJhn/united-states) - [China](https://apptail.io/app/737-master-caution-eJhn/china) - [France](https://apptail.io/app/737-master-caution-eJhn/france) - [Spain](https://apptail.io/app/737-master-caution-eJhn/spain) - [Türkiye](https://apptail.io/app/737-master-caution-eJhn/turkey) - [India](https://apptail.io/app/737-master-caution-eJhn/india) - [Canada](https://apptail.io/app/737-master-caution-eJhn/canada) - [Dominican Republic](https://apptail.io/app/737-master-caution-eJhn/dominican-republic) - [Netherlands](https://apptail.io/app/737-master-caution-eJhn/netherlands) - [Australia](https://apptail.io/app/737-master-caution-eJhn/australia) - [Chile](https://apptail.io/app/737-master-caution-eJhn/chile) - [Colombia](https://apptail.io/app/737-master-caution-eJhn/colombia) - [Cyprus](https://apptail.io/app/737-master-caution-eJhn/cyprus) - [Czechia](https://apptail.io/app/737-master-caution-eJhn/czechia) - [Germany](https://apptail.io/app/737-master-caution-eJhn/germany) - [Denmark](https://apptail.io/app/737-master-caution-eJhn/denmark) - [Algeria](https://apptail.io/app/737-master-caution-eJhn/algeria) - [Ecuador](https://apptail.io/app/737-master-caution-eJhn/ecuador) - [Egypt](https://apptail.io/app/737-master-caution-eJhn/egypt) - [Finland](https://apptail.io/app/737-master-caution-eJhn/finland) - [United Kingdom](https://apptail.io/app/737-master-caution-eJhn/united-kingdom) - [Greece](https://apptail.io/app/737-master-caution-eJhn/greece) - [Hong Kong SAR China](https://apptail.io/app/737-master-caution-eJhn/hong-kong) - [Hungary](https://apptail.io/app/737-master-caution-eJhn/hungary) - [Indonesia](https://apptail.io/app/737-master-caution-eJhn/indonesia) - [Ireland](https://apptail.io/app/737-master-caution-eJhn/ireland) - [Israel](https://apptail.io/app/737-master-caution-eJhn/israel) - [Iceland](https://apptail.io/app/737-master-caution-eJhn/iceland) - [Italy](https://apptail.io/app/737-master-caution-eJhn/italy) - [Japan](https://apptail.io/app/737-master-caution-eJhn/japan) - 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[Portugal](https://apptail.io/app/737-master-caution-eJhn/portugal) - [Romania](https://apptail.io/app/737-master-caution-eJhn/romania) - [Russia](https://apptail.io/app/737-master-caution-eJhn/russia) - [Saudi Arabia](https://apptail.io/app/737-master-caution-eJhn/saudi-arabia) - [Sweden](https://apptail.io/app/737-master-caution-eJhn/sweden) - [Singapore](https://apptail.io/app/737-master-caution-eJhn/singapore) - [Slovakia](https://apptail.io/app/737-master-caution-eJhn/slovakia) - [Thailand](https://apptail.io/app/737-master-caution-eJhn/thailand) - [Taiwan](https://apptail.io/app/737-master-caution-eJhn/taiwan) - [Ukraine](https://apptail.io/app/737-master-caution-eJhn/ukraine) - [Vietnam](https://apptail.io/app/737-master-caution-eJhn/vietnam) - [United Arab Emirates](https://apptail.io/app/737-master-caution-eJhn/united-arab-emirates) - [South Africa](https://apptail.io/app/737-master-caution-eJhn/south-africa) - [Argentina](https://apptail.io/app/737-master-caution-eJhn/argentina) - [Austria](https://apptail.io/app/737-master-caution-eJhn/austria) - [Azerbaijan](https://apptail.io/app/737-master-caution-eJhn/azerbaijan) - [Belgium](https://apptail.io/app/737-master-caution-eJhn/belgium) - [Bahrain](https://apptail.io/app/737-master-caution-eJhn/bahrain) - [Brunei](https://apptail.io/app/737-master-caution-eJhn/brunei) - [Brazil](https://apptail.io/app/737-master-caution-eJhn/brazil) - [Belarus](https://apptail.io/app/737-master-caution-eJhn/belarus) - [Switzerland](https://apptail.io/app/737-master-caution-eJhn/switzerland) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*