Does anyone know on which line number Boeing started putting the SFP spoilers on every NG? I had read they were going do that but I didn't know they already did. I was watching some awsome videos by Hakuto0505 on his youtube channel, and I noticed a fairly new JAL Express 737-800 whose spoilers deployed to the SFP spoiler angle. It's really easy to tell when you watch which one has it and which ones don't. On the one's that don't only the outboard spoiler goes all the way up. The others are at a shallower deployment angle.I have one other question if anyone knows the answer. Is there a light or message in the 800/900/900ER in the cockpit if you tailstrike on takeoff and compress the tailskid? I know there are marking on it on the outside to be able to easily tell if you've had a tailsrike. Thanks to anyone who has the answers. Lets all hope for an NGX release soon!Hiram Hunt

I have one other question if anyone knows the answer. Is there a light or message in the 800/900/900ER in the cockpit if you tailstrike on takeoff and compress the tailskid? I know there are marking on it on the outside to be able to easily tell if you've had a tailsrike.

I dont think that there is, but wouldn't the pilots feel the tail dragging along anyway? And the pitch angle would be quite high for takeoff while still on the ground, with an indication of a speed below the normal rotation point.

No actually they might not feel it at all. You'd be amazed how bumpy and noisy and rattley a takeoff is in the cockpit of a jet. If they slammed it down then yeah they would feel it. But if they just tapped it enough to compress the skid they'd probably never know unless the tower told them. As far as the deck angle goes, it isn't that high to hit the tail in the 800 and even less in the 900. Even at the proper v-speeds you can pop the tail really easily if you yank back on the yoke when you rotate. It's happened. There have been tail strikes on the Airbus A321 and it has tailstrike protection in the fly-by-wire software. A Continental 737 captain told me once when I was on the jumpseat that the main reason the skid is there is for landing. On a bounced landing if you pull the yoke back to cushion the second bounce instead of adding a little power and holding the deck angle you'll hit the tail. In the CRJ 700/900's that I used to fly the only way to know if you'd hit the tail skid was to go look at it on every pre-flight and after landing walkaround inspection. Same on the Dash 8-200's I flew. You would have had to been in a stall in the CRJ700/900 to hit the tail but it was super easy to hit it in the Dash 8 on a bounced landing. They preached no greater than 8 degress pitch on takeoff or landing because the tail hit at 12.Hiram Hunt

Is SFP now on every airplane ? I read it was an option, airlines need to pay extra for this, 27K on a 738, winglets, carbon brakes. never thought of spoiler deployment angle, Thanks for this bit.There is no indication of tail strike in the cockpit on 737NG, it would be easily apparent as it happens from inside the cockpit through the control column or sound, if incase it is very slight then the tailskid would collapse anyway leaving the tailskid indicator stripe and pilots faces in the red. Rear Cabin crew is also supposed to confirm this with the cockpit if they hear any tail strike, On a larger plane however like the 777, an EICAS message would alert the crew. Anyways flight cannot continue. Cheers!B h a s k a r - K

I know on the 767 also, there is a message that displays in the cockpit. Again you would have to land and inspect.