hey all, im doing a flight from KDEN to KLAX in a 737-900NG. everything was going fine until a few thousand feet up, where my plane started quickly losing speed, this was also around the same time the cabin altitude warning went off (which i have no idea how to fix). what do i do? im currently in a stall and have the game paused because im frozen in fear 😭
737NG losing speed on climb, help!!
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It’s probably because of your trim. You can disconnect the autopilot and trim it out manually
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hey all, im doing a flight from KDEN to KLAX in a 737-900NG. everything was going fine until a few thousand feet up, where my plane started quickly losing speed, this was also around the same time the cabin altitude warning went off (which i have no idea how to fix). what do i do? im currently in a stall and have the game paused because im frozen in fear 😭
Hopefully you realize this is a simulation and not real, so stay calm and relaxed 😂. You can also activate the automatic trim. However, you should also adjust the cabin pressure. Cruise altitude and destination altitude. It's all in the tutorial 👍🖖
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i’m still wildly confused..
i fixed the cabin altitude, yet the plane still seems to lose speed on climb. i have it on 1,300 v/s, and it only started happening at around 18,000 feet.
i tried turning on and off auto trim, and nothing happened.
What GS speed is displayed? 1,300 v/s is perhaps too high.
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Oh my god, you’re probably making the same mistake I did when I first started flying the 737! I was so frustrated trying to figure out what I was doing wrong—but it turns out I just wasn’t flying it properly. Now that I understand the procedures, I absolutely love the 737 the most.
The issue I had was… When I was flying the overpowered A320 FAM (CFM), I’d gotten used to managing the climb manually with Vertical Speed (VS), often forgetting to reduce it. I brought that habit over to the 737, and it got me into trouble. The engines are strong but definitely not overpowered like on the A320, so I was ending up in stall situations.
In my experience, the 737 can’t realistically climb to FL410 like the A320 can. I usually cap it at FL390. Just stick to VNAV for climbs—it’ll manage the power and pitch much better. You can also fine-tune it with the N1 limit if needed.
Another mistake I made early on was during startup and taxi: I didn’t interact correctly with the overhead panel, especially around packs and air systems. So here’s a quick reminder of the right setup for in-flight:
- Both Recirc Fans: AUTO
- Both Packs: AUTO (you can turn them OFF for takeoff and back ON at around 1000 ft AGL)
- Isolation Valve: AUTO
- Engine Bleed 1 & 2: ON
- APU Bleed: OFF
Hope this helps you out!
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- Official Post
Are you flying with autopilot or copilot on?
Please check if the assistances for cockpit and auto-warnings are still on. This will automatically handle the cabin pressure warning when you initiate a descent.
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Which speed is dropping, V/S? Ground speed or Air speed?
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In V/S, the plane will prioritise the rate of climb and not the speed, so it will not correct the pitch if the plane starts losing speed (at higher altitudes there is less lift so the plane needs to pitch down to maintain the TAS). Some pilots even like to call this mode the ‘very stupid’ mode, and it is rarely ever used for climb. Try to stick with FLCH or VNAV, which will prioritise airspeed.