Engine tracking

[nabeelio]

Phases

Engine Start

• N2 > 20%
• Fuel flow > ~0
• Can transition into taxi

Engine Stop

• N2 < 20%
• Fuel flow ~0
• Can transition into "arrived"

---

Sim Vars

X-Plane

Docs

• sim/flightmodel/engine/ENGN_N2_ (float array), given as a percentage
• sim/flightmodel/engine/ENGN_FF_ - Fuel flow (per engine) in kg/second
• sim/aircraft/engine/acf_num_engines - count for number of engines to read out of the array
• sim/cockpit/engine/fuel_pump_on - Is the fuel pump on (one per engine)

FSUIPC

For FSUIPC (docs)

Engine 2 Jet N1 as 0 – 16384 (100%), or Prop RPM (derive RPM by multiplying this value by the RPM Scaler (see 08C8) and dividing by 65536). Note that Prop RPM is signed and negative for counter-rotating propellers.

• 0x0AEC - number of engines
• 0x0896 (engine1)
• 0x092E (engine 2)
• 0x09C6 (engine 3)
• 0x0A5E (engine 4)
• 0x0918 - fuel flow eng 1, 8 bytes, float64
• 0x09B0 - fuel flow eng 2
• 0x0A48 - fuel flow eng 3
• 0x0AE0 - fuel flow eng 4

MSFS

See docs. Need to see the differences between:

• NUMBER OF ENGINES - Needed for the index(s)
• ENG N2 RPM:[1-4] - "Rpm(0 to 16384 = 0 to 100%)", TYPE_UINT16
• ENG FUEL FLOW PPH:[1-4] - float64
• TURB ENG CORRECTED N2 (percentage)
• TURB ENG N2 (percentage)
• ENGINE TYPE:

enum {
    Piston = 0,
    Jet = 1,
    None = 2,
    // There are a few others, already defined
}

---

Logs

• Individual engine starts
• Parking brake is applied/released

Settings

• Don't allow start flight if any engines are running

Rules

• Beacon lights on while engines are running

[FatihKoz]

Seems ok ...

Parking brake logs will be for eye candy and error tracking only I think 'cause they have no operational effect and may be used anytime a pilot needs to keep the plane stopped (instead of applying constant pressure on pedals)

[FatihKoz]

For X-Plane

sim/flightmodel/engine/ dataref group may be used for per engine checks (for jets and props) ... It also offers an ENGN_running dataref which I believe will return true when the engine is actually running :)

[FatihKoz]

Implemented except the "arrived" state change. We do also have a request about stopping flight time with engine stop.

[avs-code]

Seems that msfs2020 changed some parameter in prop engine's in idle state:
P.S: I will keep an eye out for more recent logs.

02.Jan.2023 10:27 | Started boarding at 2023-01-02T10:27:07Z, aircraft: C172 G1000 Asobo Argavirtual
-- | --
02.Jan.2023 10:32 | Engine started; 36.677453,-4.486219; h=207°, a=-279ft, s=0 kts
02.Jan.2023 10:32 | Engine stopped; 36.677443,-4.486228; h=216°, a=-279ft, s=1 kts
02.Jan.2023 10:32 | Engine stopped; 36.677423,-4.486272; h=259°, a=-279ft, s=2 kts
02.Jan.2023 10:32 | Engine started; 36.677424,-4.486266; h=253°, a=-279ft, s=2 kts
02.Jan.2023 10:32 | Engine started; 36.677487,-4.486352; h=3°, a=-279ft, s=0 kts
02.Jan.2023 10:32 | Rule Violation: Beacon lights on while engine is running (1x); 36.677487,-4.486352, -279.39', 0.01kt, 4°
02.Jan.2023 10:33 | Rule Violation: Beacon lights on while engine is running (2x); 36.678969,-4.487322, -281.18', 11.66kt, 296°
02.Jan.2023 10:34 | Rule Violation: Beacon lights on while engine is running (3x); 36.680381,-4.490692, -280.29', 12.18kt, 298°
02.Jan.2023 10:42 | Taxi lights turned on; 36.670263,-4.489666; h=136°, a=-278ft, s=17 kts
02.Jan.2023 10:44 | Engine stopped; 36.665731,-4.486231; h=306°, a=-283ft, s=3 kts
02.Jan.2023 10:44 | Engine stopped; 36.665777,-4.486305; h=309°, a=-283ft, s=4 kts
02.Jan.2023 10:44 | Engine started; 36.66577,-4.486295; h=309°, a=-283ft, s=4 kts
02.Jan.2023 10:45 | Strobe lights turned on; 36.665851,-4.486422; h=308°, a=-283ft, s=0 kts
02.Jan.2023 10:45 | Beacons turned on; 36.665851,-4.486422; h=308°, a=-283ft, s=0 kts
02.Jan.2023 10:45 | Landing lights turned on; 36.665851,-4.486422; h=308°, a=-283ft, s=0 kts
02.Jan.2023 10:46 | Engine started; 36.665851,-4.486422; h=308°, a=-283ft, s=0 kts
02.Jan.2023 10:46 | Flaps set to FULL; 36.666222,-4.486996; h=311°, a=-283ft, s=27 kts
02.Jan.2023 10:46 | Flaps set to 20; 36.666177,-4.486931; h=310°, a=-283ft, s=27 kts
02.Jan.2023 10:46 | Takeoff Time: 2023-01-02T10:46:18Z; 36.666637,-4.487555; h=311°, a=-282ft, s=41 kts
02.Jan.2023 10:46 | Flaps set to 20; 36.668952,-4.490841; h=308°, a=-267ft, s=70 kts
02.Jan.2023 10:46 | Flaps set to 10; 36.66905,-4.490998; h=308°, a=-264ft, s=70 kts
02.Jan.2023 10:46 | Flaps set to FULL; 36.671204,-4.494602; h=313°, a=-241ft, s=90 kts
02.Jan.2023 10:46 | Flaps set to 20; 36.671044,-4.494378; h=311°, a=-239ft, s=89 kts
02.Jan.2023 10:46 | Flaps set to 20; 36.672897,-4.49667; h=315°, a=-210ft, s=88 kts
02.Jan.2023 10:46 | Flaps set to 10; 36.673688,-4.497714; h=312°, a=-132ft, s=81 kts
02.Jan.2023 10:46 | Flaps set to UP; 36.676218,-4.501349; h=311°, a=-145ft, s=101 kts
02.Jan.2023 10:48 | Enroute; 36.669624,-4.540541; h=262°, a=280ft, s=115 kts
02.Jan.2023 10:50 | Flaps set to 10; 36.669647,-4.629345; h=289°, a=1104ft, s=85 kts
02.Jan.2023 10:50 | Flaps set to 20; 36.669773,-4.629824; h=288°, a=1119ft, s=84 kts
02.Jan.2023 10:50 | Flaps set to UP; 36.669895,-4.630307; h=288°, a=1136ft, s=82 kts
02.Jan.2023 10:50 | Flaps set to 10; 36.669835,-4.630067; h=288°, a=1127ft, s=83 kts
02.Jan.2023 10:56 | Taxi lights turned off; 36.680285,-4.842033; h=261°, a=1947ft, s=112 kts
02.Jan.2023 10:59 | Rule Violation: Excesss Bank (1x); 36.678693,-4.955363, 3278.62', 53.83kt, 282°
02.Jan.2023 10:59 | Pilot diverted to LERN
02.Jan.2023 10:59 | Landing rate: -998
02.Jan.2023 11:00 | Rule Violation: Hard Landing (1x); 36.677453,-4.486219, 40.36', 0kt, 207°
02.Jan.2023 11:00 | Engine stopped; 36.677453,-4.486219; h=207°, a=40ft, s=0 kts
02.Jan.2023 11:00 | Nav lights turned off; 36.677453,-4.486219; h=207°, a=40ft, s=0 kts
02.Jan.2023 11:00 | Beacons turned off; 36.677453,-4.486219; h=207°, a=40ft, s=0 kts
02.Jan.2023 11:00 | Landing lights turned off; 36.677453,-4.486219; h=207°, a=40ft, s=0 kts
02.Jan.2023 11:00 | Strobe lights turned off; 36.677453,-4.486219; h=207°, a=40ft, s=0 kts
02.Jan.2023 11:00 | Flaps set to FULL; 36.677453,-4.486219; h=207°, a=-279ft, s=0 kts
02.Jan.2023 11:00 | Flaps set to UP; 36.677453,-4.486219; h=207°, a=-279ft, s=0 kts
02.Jan.2023 11:00 | Flaps set to 10; 36.677453,-4.486219; h=207°, a=-279ft, s=0 kts
02.Jan.2023 11:01 | Engine started; 36.677453,-4.486219; h=207°, a=-279ft, s=0 kts
02.Jan.2023 11:01 | Engine stopped; 36.677453,-4.486219; h=207°, a=-279ft, s=0 kts
02.Jan.2023 11:01 | Strobe lights turned on; 36.677453,-4.486219; h=207°, a=-279ft, s=0 kts
02.Jan.2023 11:01 | Taxi lights turned on; 36.677453,-4.486219; h=207°, a=-279ft, s=0 kts
02.Jan.2023 11:01 | Beacons turned on; 36.677453,-4.486219; h=207°, a=-279ft, s=0 kts
02.Jan.2023 11:02 | Rule Violation: Strobes on during pushback or taxi (1x); 36.677453,-4.486219, -279.15', 0kt, 207°
02.Jan.2023 11:02 | Engine started; 36.677453,-4.486219; h=207°, a=-279ft, s=0 kts
02.Jan.2023 11:02 | Engine stopped; 36.677426,-4.486318; h=291°, a=-279ft, s=5 kts
02.Jan.2023 11:02 | Engine started; 36.677497,-4.486367; h=358°, a=-279ft, s=6 kts
02.Jan.2023 11:02 | Engine stopped; 36.67751,-4.486368; h=359°, a=-279ft, s=6 kts
02.Jan.2023 11:03 | Beacons turned off; 36.678312,-4.485807; h=338°, a=-281ft, s=4 kts
02.Jan.2023 11:04 | Engine stopped; 36.67854,-4.486299; h=299°, a=-281ft, s=2 kts
02.Jan.2023 11:04 | Rule Violation: Strobes on during pushback or taxi (2x); 36.678537,-4.486293, -281.59', 2.63kt, 299°
02.Jan.2023 11:04 | Engine started; 36.678537,-4.486293; h=299°, a=-281ft, s=2 kts
02.Jan.2023 11:04 | Engine started; 36.678557,-4.486339; h=295°, a=-281ft, s=2 kts
02.Jan.2023 11:05 | Rule Violation: Strobes on during pushback or taxi (3x); 36.68068,-4.49141, -279.46', 13.83kt, 298°
02.Jan.2023 11:06 | Strobe lights turned off; 36.681096,-4.492224; h=296°, a=-279ft, s=8 kts
02.Jan.2023 11:11 | Engine stopped; 36.666096,-4.485238; h=218°, a=-284ft, s=0 kts
02.Jan.2023 11:11 | Engine started; 36.666096,-4.485238; h=218°, a=-284ft, s=0 kts
02.Jan.2023 11:11 | Engine stopped; 36.666096,-4.485238; h=218°, a=-284ft, s=0 kts
02.Jan.2023 11:11 | Strobe lights turned on; 36.666096,-4.485238; h=218°, a=-284ft, s=0 kts
02.Jan.2023 11:11 | Beacons turned on; 36.666096,-4.485238; h=218°, a=-284ft, s=0 kts
02.Jan.2023 11:11 | Nav lights turned on; 36.666096,-4.485238; h=218°, a=-284ft, s=0 kts
02.Jan.2023 11:12 | Engine started; 36.666096,-4.485238; h=218°, a=-284ft, s=0 kts
02.Jan.2023 11:12 | Flaps set to 20; 36.66608,-4.485253; h=218°, a=-284ft, s=3 kts
02.Jan.2023 11:12 | Flaps set to FULL; 36.666071,-4.485263; h=219°, a=-284ft, s=3 kts
02.Jan.2023 11:12 | Engine stopped; 36.66559,-4.485878; h=233°, a=-282ft, s=13 kts
02.Jan.2023 11:12 | Engine started; 36.665565,-4.486003; h=292°, a=-282ft, s=7 kts
02.Jan.2023 11:12 | Engine stopped; 36.665572,-4.48602; h=301°, a=-282ft, s=7 kts
02.Jan.2023 11:13 | Engine started; 36.665667,-4.486172; h=308°, a=-283ft, s=0 kts
02.Jan.2023 11:13 | Rule Violation: Excess Taxi Speed (1x); 36.666793,-4.487773, -282.36', 46.69kt, 312°
02.Jan.2023 11:13 | Flaps set to 20; 36.672205,-4.495884; h=306°, a=-161ft, s=75 kts
02.Jan.2023 11:13 | Flaps set to 10; 36.673638,-4.499657; h=286°, a=-113ft, s=83 kts
02.Jan.2023 11:15 | Flaps set to UP; 36.668958,-4.540813; h=266°, a=666ft, s=90 kts
02.Jan.2023 11:16 | Taxi lights turned off; 36.666902,-4.582649; h=266°, a=1687ft, s=106 kts
02.Jan.2023 11:56 | Engine stopped; 36.707993,-6.068611; h=288°, a=1348ft, s=120 kts
02.Jan.2023 11:56 | Flaps set to FULL; 36.707993,-6.068611; h=288°, a=1348ft, s=120 kts
02.Jan.2023 11:56 | Flaps set to 20; 36.707896,-6.068286; h=286°, a=1352ft, s=120 kts
02.Jan.2023 11:58 | Rule Violation: Excess Taxi Speed (2x); 36.740275,-6.062118, 75.85', 44.92kt, 24°
02.Jan.2023 11:58 | Flaps set to 20; 36.741048,-6.061757; h=19°, a=76ft, s=29 kts
02.Jan.2023 11:58 | Flaps set to UP; 36.741115,-6.061728; h=21°, a=76ft, s=29 kts
02.Jan.2023 11:59 | Engine started; 36.743927,-6.062217; h=296°, a=80ft, s=3 kts
02.Jan.2023 12:00 | Engine stopped; 36.744143,-6.062961; h=285°, a=78ft, s=12 kts
02.Jan.2023 12:00 | Engine stopped; 36.744193,-6.063174; h=283°, a=80ft, s=11 kts
02.Jan.2023 12:00 | Engine started; 36.744186,-6.063139; h=285°, a=79ft, s=12 kts
02.Jan.2023 12:00 | Engine started; 36.744217,-6.063791; h=272°, a=77ft, s=5 kts
02.Jan.2023 12:00 | Engine stopped; 36.744287,-6.064902; h=270°, a=77ft, s=9 kts
02.Jan.2023 12:00 | Engine stopped; 36.744289,-6.065035; h=273°, a=77ft, s=9 kts
02.Jan.2023 12:00 | Engine started; 36.744288,-6.065009; h=272°, a=77ft, s=9 kts
02.Jan.2023 12:01 | Engine started; 36.743682,-6.06568; h=94°, a=78ft, s=3 kts
02.Jan.2023 12:01 | Engine stopped; 36.743681,-6.06567; h=93°, a=78ft, s=3 kts
02.Jan.2023 12:01 | Engine started; 36.74368,-6.065606; h=90°, a=77ft, s=3 kts
02.Jan.2023 12:02 | Engine stopped; 36.743489,-6.064809; h=187°, a=78ft, s=0 kts
02.Jan.2023 12:02 | Engine started; 36.743489,-6.064809; h=187°, a=78ft, s=0 kts
02.Jan.2023 12:02 | Engine stopped; 36.743489,-6.064809; h=187°, a=78ft, s=0 kts
02.Jan.2023 12:02 | Strobe lights turned off; 36.743489,-6.064809; h=187°, a=78ft, s=0 kts
02.Jan.2023 12:02 | Nav lights turned off; 36.743489,-6.064809; h=187°, a=78ft, s=0 kts
02.Jan.2023 12:03 | Beacons turned off; 36.743489,-6.064809; h=187°, a=78ft, s=0 kts
02.Jan.2023 12:03 | Blocks on time: 2023-01-02T12:03:26Z