Flight Report
Flight Date
20 Mar 2025
Review Status
Approved
Flight Number
AB1031
Departure ICAO
Arrival ICAO
Alternate ICAO
N/A
Route
Y211 BEBKU MAREM RUDAP BAMTA RADIZ DETSA PIDEP DIPVO NIKMA T369
Aircraft
FWB AIR BERLIN (D-ABNX)
Fuel Used
8,920lb
Distance
713nm
Passengers
163
Cargo
0
Departure Time
09:38:25
Arrival Time
11:55:49
Flight Duration
02:17:23
Earnings
$1,030.37
Flight XP
500
Performance Score
100%
Landing Rate
-103fpm
Flight Type
Scheduled
Comments
ACARS flight.
Skill Analysis (100%)
Stall Detected
OK
Crash Detected
OK
Landing Lights Below 10k
OK
Landing Lights Above 10k
OK
Overspeed / Stress Detected
OK
Taxi Overspeed
OK
Overspeed below 10k
OK
Beacon Off Engine On
OK
Slew Detected
OK
Pause Detected
OK
Take-off/Landing Analysis (Landing Rate -103fpm)
Take-off G-Force
1.08g
Rotate Speed
181kt
Rotate Pitch
-5.48°
Rotate Bank
-0.7°
Gear-up Speed
187kt
Gear-up Altitude
980ft
Take-Off Winds
180/7kt
TAT Departure/Arrival
14°C/°C
Touch-down G-Force
1.22g
Touch-down Speed
147kt
Touch-down Pitch
-0.84°
Touch-down Bank
0.29°
Gear-down Speed
149kt
Gear-down Altitude
2,490ft
Landing Winds
NA
Touch-Down Spoilers Deployed
Yes
Flight Log
[09:40:22utc] You have successfully logged in Maurizio Rogait.
[09:40:52utc] Your flight to LIRF has now been started.
[09:40:52utc] Aircraft boarding in progress
[09:46:38utc] Landing lights ON
[09:48:41utc] Detected aircraft taxiing
[09:49:39utc] FLAPS 1
[09:49:40utc] Starting engine(s)
[09:49:42utc] FLAPS 2
[09:54:10utc] Detected take-off roll, WIND 180/7kt
[09:54:39utc] Departing EDDB, IAS 181kt, G-force 1.08g, pitch -5.48deg, bank -0.7deg, VS 200fpm, HDG 247deg
[09:54:55utc] Gear UP, IAS 187kt, GS 177kt, ALT 980ft
[09:54:59utc] Aircraft climbing, IAS 185kt, GS 175kt, VS 4388fpm, ALT 1240ft, PITCH -17.92deg, HDG 248deg, TAT 9deg, WIND 221/6kt
[09:55:11utc] FLAPS 1, IAS 178kt
[09:55:20utc] FLAPS UP, IAS 185kt
[09:57:45utc] Landing lights OFF, ALT 9860ft
[10:13:13utc] Aircraft at 35880ft, IAS 259kt, GS 455kt, HDG 189deg, TAT -23deg, WIND 270/4kt
[10:26:22utc] Aircraft climbing, IAS 257kt, GS 449kt, VS 51fpm, ALT 35860ft, PITCH -3.43deg, HDG 207deg, TAT -25deg, WIND 270/4kt
[10:26:30utc] Aircraft at 35870ft, IAS 257kt, GS 449kt, HDG 206deg, TAT -24deg, WIND 270/4kt
[10:28:00utc] Aircraft climbing, IAS 260kt, GS 453kt, VS 56fpm, ALT 35880ft, PITCH -3.46deg, HDG 206deg, TAT -26deg, WIND 270/4kt
[10:28:24utc] Aircraft at 35910ft, IAS 261kt, GS 453kt, HDG 206deg, TAT -27deg, WIND 270/4kt
[10:37:08utc] Aircraft descending, ALT 35840ft, IAS 255kt, GS 451kt, HDG 192deg, VS -84fpm, TAT -21deg, WIND 269/4kt
[10:37:14utc] Aircraft at 35840ft, IAS 255kt, GS 451kt, HDG 192deg, TAT -22deg, WIND 270/4kt
[10:37:26utc] Aircraft climbing, IAS 257kt, GS 451kt, VS 69fpm, ALT 35840ft, PITCH -3.59deg, HDG 192deg, TAT -24deg, WIND 270/4kt
[10:37:33utc] Aircraft at 35860ft, IAS 256kt, GS 451kt, HDG 192deg, TAT -23deg, WIND 269/4kt
[10:38:27utc] Aircraft climbing, IAS 258kt, GS 451kt, VS 130fpm, ALT 35870ft, PITCH -3.4deg, HDG 193deg, TAT -24deg, WIND 270/4kt
[10:38:38utc] Aircraft at 35870ft, IAS 257kt, GS 453kt, HDG 193deg, TAT -22deg, WIND 270/4kt
[10:39:12utc] Aircraft climbing, IAS 259kt, GS 453kt, VS 84fpm, ALT 35880ft, PITCH -3.27deg, HDG 193deg, TAT -24deg, WIND 271/4kt
[10:39:22utc] Aircraft at 35890ft, IAS 259kt, GS 453kt, HDG 193deg, TAT -24deg, WIND 270/4kt
[10:39:40utc] Aircraft descending, ALT 35850ft, IAS 256kt, GS 455kt, HDG 193deg, VS -196fpm, TAT -18deg, WIND 270/4kt
[10:39:52utc] Aircraft at 35860ft, IAS 256kt, GS 455kt, HDG 193deg, TAT -17deg, WIND 270/4kt
[10:39:59utc] Aircraft climbing, IAS 259kt, GS 455kt, VS 56fpm, ALT 35860ft, PITCH -3.61deg, HDG 193deg, TAT -22deg, WIND 270/4kt
[10:40:06utc] Aircraft at 35870ft, IAS 257kt, GS 455kt, HDG 193deg, TAT -19deg, WIND 270/4kt
[10:40:13utc] Aircraft climbing, IAS 258kt, GS 455kt, VS 56fpm, ALT 35860ft, PITCH -3.56deg, HDG 193deg, TAT -20deg, WIND 270/4kt
[10:40:26utc] Aircraft at 35850ft, IAS 258kt, GS 457kt, HDG 193deg, TAT -20deg, WIND 270/4kt
[10:40:51utc] Aircraft climbing, IAS 259kt, GS 457kt, VS 189fpm, ALT 35870ft, PITCH -3.5deg, HDG 193deg, TAT -21deg, WIND 270/4kt
[10:41:31utc] Aircraft at 35900ft, IAS 260kt, GS 457kt, HDG 192deg, TAT -21deg, WIND 270/4kt
[10:41:43utc] Aircraft descending, ALT 35870ft, IAS 257kt, GS 459kt, HDG 192deg, VS -129fpm, TAT -15deg, WIND 268/4kt
[10:42:04utc] Aircraft at 35840ft, IAS 254kt, GS 459kt, HDG 192deg, TAT -10deg, WIND 270/4kt
[10:42:38utc] Aircraft climbing, IAS 254kt, GS 459kt, VS 241fpm, ALT 35880ft, PITCH -3.31deg, HDG 192deg, TAT -10deg, WIND 270/4kt
[10:42:48utc] Aircraft at 35880ft, IAS 255kt, GS 461kt, HDG 192deg, TAT -8deg, WIND 271/4kt
[10:44:58utc] Aircraft descending, ALT 35880ft, IAS 258kt, GS 463kt, HDG 184deg, VS -94fpm, TAT -12deg, WIND 270/4kt
[10:45:04utc] Aircraft at 35870ft, IAS 259kt, GS 463kt, HDG 182deg, TAT -14deg, WIND 270/4kt
[10:45:14utc] Aircraft climbing, IAS 259kt, GS 461kt, VS 120fpm, ALT 35890ft, PITCH -3.38deg, HDG 181deg, TAT -16deg, WIND 270/4kt
[10:45:40utc] Aircraft descending, ALT 35890ft, IAS 258kt, GS 461kt, HDG 181deg, VS -107fpm, TAT -15deg, WIND 270/4kt
[10:45:59utc] Aircraft at 35850ft, IAS 257kt, GS 459kt, HDG 181deg, TAT -15deg, WIND 269/4kt
[10:46:42utc] Aircraft descending, ALT 35840ft, IAS 256kt, GS 457kt, HDG 181deg, VS -112fpm, TAT -15deg, WIND 270/4kt
[10:46:53utc] Aircraft climbing, IAS 258kt, GS 457kt, VS 103fpm, ALT 35860ft, PITCH -3.47deg, HDG 181deg, TAT -19deg, WIND 269/4kt
[10:47:13utc] Aircraft descending, ALT 35830ft, IAS 254kt, GS 457kt, HDG 181deg, VS -273fpm, TAT -12deg, WIND 270/4kt
[10:47:24utc] Aircraft at 35840ft, IAS 256kt, GS 457kt, HDG 181deg, TAT -17deg, WIND 269/4kt
[10:47:26utc] Aircraft climbing, IAS 256kt, GS 457kt, VS 59fpm, ALT 35840ft, PITCH -3.6deg, HDG 181deg, TAT -17deg, WIND 271/4kt
[10:47:31utc] Aircraft at 35840ft, IAS 254kt, GS 455kt, HDG 181deg, TAT -14deg, WIND 269/4kt
[10:47:50utc] Aircraft climbing, IAS 258kt, GS 455kt, VS 236fpm, ALT 35880ft, PITCH -3.17deg, HDG 181deg, TAT -21deg, WIND 269/4kt
[10:48:00utc] Aircraft at 35880ft, IAS 257kt, GS 453kt, HDG 181deg, TAT -22deg, WIND 271/4kt
[10:50:03utc] Aircraft descending, ALT 35870ft, IAS 257kt, GS 449kt, HDG 181deg, VS -147fpm, TAT -27deg, WIND 270/4kt
[10:50:37utc] Aircraft climbing, IAS 252kt, GS 445kt, VS 220fpm, ALT 35880ft, PITCH -3.3deg, HDG 181deg, TAT -23deg, WIND 270/4kt
[10:50:47utc] Aircraft at 35880ft, IAS 254kt, GS 449kt, HDG 181deg, TAT -22deg, WIND 270/4kt
[10:56:44utc] Aircraft descending, ALT 35680ft, IAS 261kt, GS 451kt, HDG 181deg, VS -1791fpm, TAT -29deg, WIND 270/4kt
[11:02:31utc] Aircraft climbing, IAS 259kt, GS 445kt, VS 83fpm, ALT 35370ft, PITCH -3.19deg, HDG 181deg, TAT -29deg, WIND 270/4kt
[11:02:40utc] Aircraft at 35370ft, IAS 261kt, GS 449kt, HDG 181deg, TAT -29deg, WIND 270/4kt
[11:04:42utc] Aircraft climbing, IAS 261kt, GS 449kt, VS 130fpm, ALT 35370ft, PITCH -3.04deg, HDG 181deg, TAT -29deg, WIND 270/4kt
[11:04:51utc] Aircraft at 35370ft, IAS 262kt, GS 449kt, HDG 181deg, TAT -29deg, WIND 270/4kt
[11:15:38utc] Aircraft descending, ALT 35180ft, IAS 264kt, GS 459kt, HDG 183deg, VS -1783fpm, TAT -20deg, WIND 270/4kt
[11:17:40utc] Aircraft at 32370ft, IAS 262kt, GS 430kt, HDG 183deg, TAT -23deg, WIND 270/4kt
[11:17:57utc] Aircraft descending, ALT 32310ft, IAS 262kt, GS 430kt, HDG 183deg, VS -725fpm, TAT -23deg, WIND 270/4kt
[11:29:27utc] Landing lights ON, ALT 11400ft
[11:37:59utc] Aircraft climbing, IAS 237kt, GS 253kt, VS 340fpm, ALT 3380ft, PITCH -1.14deg, HDG 337deg, TAT 13deg, WIND 202/12kt
[11:38:09utc] Aircraft at 3350ft, IAS 247kt, GS 260kt, HDG 339deg, TAT 14deg, WIND 197/8kt
[11:38:11utc] Aircraft descending, ALT 3350ft, IAS 246kt, GS 260kt, HDG 339deg, VS -136fpm, TAT 13deg, WIND 188/8kt
[11:38:14utc] Aircraft at 3340ft, IAS 244kt, GS 259kt, HDG 340deg, TAT 13deg, WIND 192/9kt
[11:38:15utc] Aircraft climbing, IAS 244kt, GS 259kt, VS 53fpm, ALT 3340ft, PITCH -3.44deg, HDG 340deg, TAT 13deg, WIND 193/8kt
[11:38:20utc] Aircraft descending, ALT 3350ft, IAS 241kt, GS 259kt, HDG 347deg, VS -146fpm, TAT 13deg, WIND 191/8kt
[11:39:20utc] Aircraft at 2880ft, IAS 214kt, GS 218kt, HDG 101deg, TAT 12deg, WIND 180/16kt
[11:39:30utc] FLAPS 1, IAS 210kt
[11:39:42utc] Aircraft climbing, IAS 203kt, GS 200kt, VS 55fpm, ALT 2870ft, PITCH -3.96deg, HDG 139deg, TAT 11deg, WIND 169/13kt
[11:39:45utc] Aircraft at 2870ft, IAS 201kt, GS 198kt, HDG 140deg, TAT 11deg, WIND 170/11kt
[11:39:46utc] Aircraft descending, ALT 2870ft, IAS 200kt, GS 198kt, HDG 140deg, VS -162fpm, TAT 11deg, WIND 170/9kt
[11:39:52utc] Aircraft climbing, IAS 196kt, GS 194kt, VS 286fpm, ALT 2860ft, PITCH -5.05deg, HDG 140deg, TAT 11deg, WIND 167/13kt
[11:39:57utc] Aircraft descending, ALT 2880ft, IAS 194kt, GS 192kt, HDG 140deg, VS -86fpm, TAT 11deg, WIND 170/9kt
[11:40:04utc] Aircraft climbing, IAS 186kt, GS 185kt, VS 84fpm, ALT 2830ft, PITCH -7.39deg, HDG 139deg, TAT 11deg, WIND 167/8kt
[11:40:04utc] FLAPS 2, IAS 188kt
[11:40:06utc] FLAPS 3, IAS 182kt
[11:40:11utc] Aircraft descending, ALT 2880ft, IAS 174kt, GS 171kt, HDG 139deg, VS -122fpm, TAT 10deg, WIND 169/11kt
[11:40:15utc] Aircraft climbing, IAS 167kt, GS 167kt, VS 105fpm, ALT 2870ft, PITCH -3.51deg, HDG 139deg, TAT 9deg, WIND 171/13kt
[11:40:19utc] Aircraft descending, ALT 2870ft, IAS 166kt, GS 161kt, HDG 139deg, VS -301fpm, TAT 9deg, WIND 167/13kt
[11:40:33utc] Aircraft at 2860ft, IAS 141kt, GS 138kt, HDG 140deg, TAT 8deg, WIND 167/8kt
[11:40:38utc] FLAPS 4, IAS 138kt
[11:40:42utc] FLAPS FULL, IAS 140kt
[11:40:43utc] Aircraft descending, ALT 2810ft, IAS 141kt, GS 136kt, HDG 140deg, VS -309fpm, TAT 8deg, WIND 170/12kt
[11:41:21utc] Aircraft at 2500ft, IAS 137kt, GS 134kt, HDG 141deg, TAT 9deg, WIND 185/9kt
[11:41:27utc] Aircraft climbing, IAS 148kt, GS 144kt, VS 114fpm, ALT 2490ft, PITCH -2.23deg, HDG 141deg, TAT 10deg, WIND 162/12kt
[11:41:32utc] Aircraft descending, ALT 2500ft, IAS 153kt, GS 148kt, HDG 140deg, VS -83fpm, TAT 10deg, WIND 165/10kt
[11:41:36utc] Aircraft climbing, IAS 155kt, GS 150kt, VS 54fpm, ALT 2480ft, PITCH -1.57deg, HDG 140deg, TAT 10deg, WIND 177/13kt
[11:41:43utc] Aircraft descending, ALT 2500ft, IAS 155kt, GS 150kt, HDG 140deg, VS -90fpm, TAT 10deg, WIND 173/11kt
[11:41:50utc] Aircraft at 2450ft, IAS 149kt, GS 146kt, HDG 141deg, TAT 10deg, WIND 188/11kt
[11:41:58utc] Aircraft climbing, IAS 149kt, GS 144kt, VS 62fpm, ALT 2500ft, PITCH -1.51deg, HDG 141deg, TAT 10deg, WIND 168/10kt
[11:42:08utc] Aircraft descending, ALT 2500ft, IAS 152kt, GS 148kt, HDG 140deg, VS -133fpm, TAT 10deg, WIND 160/9kt
[11:42:15utc] Aircraft at 2470ft, IAS 152kt, GS 148kt, HDG 139deg, TAT 10deg, WIND 157/11kt
[11:42:22utc] Aircraft descending, ALT 2490ft, IAS 151kt, GS 146kt, HDG 139deg, VS -122fpm, TAT 10deg, WIND 168/9kt
[11:42:26utc] Aircraft climbing, IAS 151kt, GS 148kt, VS 62fpm, ALT 2490ft, PITCH -1.19deg, HDG 139deg, TAT 10deg, WIND 170/11kt
[11:42:29utc] Aircraft at 2490ft, IAS 149kt, GS 146kt, HDG 139deg, TAT 10deg, WIND 176/9kt
[11:43:05utc] Aircraft descending, ALT 2490ft, IAS 151kt, GS 146kt, HDG 134deg, VS -86fpm, TAT 10deg, WIND 167/11kt
[11:43:08utc] Aircraft at 2490ft, IAS 153kt, GS 148kt, HDG 134deg, TAT 10deg, WIND 164/12kt
[11:43:08utc] FLAPS 4, IAS 151kt
[11:43:08utc] Aircraft climbing, IAS 151kt, GS 148kt, VS 76fpm, ALT 2490ft, PITCH -2.2deg, HDG 134deg, TAT 9deg, WIND 170/6kt
[11:43:11utc] FLAPS 3, IAS 151kt
[11:43:13utc] Aircraft descending, ALT 2470ft, IAS 150kt, GS 150kt, HDG 134deg, VS -189fpm, TAT 10deg, WIND 187/8kt
[11:43:16utc] Aircraft climbing, IAS 151kt, GS 150kt, VS 174fpm, ALT 2480ft, PITCH -5.26deg, HDG 135deg, TAT 10deg, WIND 185/8kt
[11:43:20utc] Aircraft descending, ALT 2480ft, IAS 153kt, GS 150kt, HDG 135deg, VS -115fpm, TAT 10deg, WIND 177/13kt
[11:43:25utc] Aircraft climbing, IAS 152kt, GS 148kt, VS 89fpm, ALT 2480ft, PITCH -6.93deg, HDG 135deg, TAT 10deg, WIND 169/13kt
[11:43:41utc] Aircraft descending, ALT 2500ft, IAS 150kt, GS 146kt, HDG 134deg, VS -97fpm, TAT 10deg, WIND 160/8kt
[11:43:47utc] Aircraft climbing, IAS 152kt, GS 146kt, VS 56fpm, ALT 2480ft, PITCH -7.48deg, HDG 134deg, TAT 10deg, WIND 162/13kt
[11:43:51utc] Aircraft descending, ALT 2480ft, IAS 148kt, GS 144kt, HDG 134deg, VS -92fpm, TAT 9deg, WIND 164/10kt
[11:43:54utc] Aircraft at 2480ft, IAS 148kt, GS 142kt, HDG 133deg, TAT 10deg, WIND 165/12kt
[11:43:55utc] Aircraft climbing, IAS 148kt, GS 142kt, VS 144fpm, ALT 2480ft, PITCH -7.23deg, HDG 133deg, TAT 10deg, WIND 162/12kt
[11:43:58utc] Aircraft at 2490ft, IAS 148kt, GS 142kt, HDG 134deg, TAT 9deg, WIND 166/12kt
[11:44:00utc] Aircraft descending, ALT 2490ft, IAS 144kt, GS 142kt, HDG 134deg, VS -91fpm, TAT 9deg, WIND 168/8kt
[11:44:02utc] Aircraft at 2490ft, IAS 148kt, GS 144kt, HDG 134deg, TAT 9deg, WIND 162/10kt
[11:44:03utc] Aircraft climbing, IAS 148kt, GS 144kt, VS 101fpm, ALT 2490ft, PITCH -7.08deg, HDG 134deg, TAT 9deg, WIND 168/10kt
[11:44:09utc] Aircraft at 2490ft, IAS 150kt, GS 146kt, HDG 134deg, TAT 10deg, WIND 161/12kt
[11:44:15utc] Aircraft climbing, IAS 151kt, GS 146kt, VS 56fpm, ALT 2490ft, PITCH -7.2deg, HDG 134deg, TAT 10deg, WIND 161/12kt
[11:44:20utc] Aircraft descending, ALT 2490ft, IAS 151kt, GS 146kt, HDG 134deg, VS -89fpm, TAT 10deg, WIND 162/11kt
[11:44:24utc] Aircraft climbing, IAS 150kt, GS 146kt, VS 66fpm, ALT 2490ft, PITCH -5.97deg, HDG 134deg, TAT 10deg, WIND 161/10kt
[11:44:30utc] Aircraft descending, ALT 2500ft, IAS 152kt, GS 148kt, HDG 134deg, VS -100fpm, TAT 10deg, WIND 160/11kt
[11:44:35utc] Aircraft climbing, IAS 150kt, GS 148kt, VS 59fpm, ALT 2480ft, PITCH -6.74deg, HDG 134deg, TAT 10deg, WIND 161/8kt
[11:44:43utc] Aircraft at 2490ft, IAS 149kt, GS 146kt, HDG 134deg, TAT 10deg, WIND 161/9kt
[11:44:45utc] Aircraft climbing, IAS 149kt, GS 146kt, VS 105fpm, ALT 2490ft, PITCH -6.28deg, HDG 134deg, TAT 10deg, WIND 157/9kt
[11:44:50utc] Aircraft at 2500ft, IAS 152kt, GS 148kt, HDG 134deg, TAT 10deg, WIND 160/11kt
[11:45:12utc] Aircraft climbing, IAS 148kt, GS 146kt, VS 88fpm, ALT 2480ft, PITCH -6.82deg, HDG 134deg, TAT 10deg, WIND 164/9kt
[11:45:19utc] Aircraft at 2500ft, IAS 150kt, GS 148kt, HDG 134deg, TAT 10deg, WIND 166/9kt
[11:45:33utc] FLAPS 4, IAS 148kt
[11:45:35utc] Aircraft climbing, IAS 148kt, GS 146kt, VS 66fpm, ALT 2490ft, PITCH -6.7deg, HDG 134deg, TAT 9deg, WIND 171/9kt
[11:45:36utc] FLAPS FULL, IAS 147kt
[11:45:51utc] Aircraft at 2490ft, IAS 151kt, GS 148kt, HDG 134deg, TAT 10deg, WIND 168/10kt
[11:45:59utc] Aircraft descending, ALT 2490ft, IAS 151kt, GS 148kt, HDG 134deg, VS -91fpm, TAT 10deg, WIND 165/11kt
[11:46:03utc] Aircraft at 2480ft, IAS 149kt, GS 146kt, HDG 134deg, TAT 10deg, WIND 160/9kt
[11:46:05utc] Aircraft climbing, IAS 148kt, GS 146kt, VS 166fpm, ALT 2490ft, PITCH -2.72deg, HDG 134deg, TAT 9deg, WIND 170/8kt
[11:46:05utc] Gear DOWN, IAS 149kt, GS 146kt, ALT 2490ft
[11:46:06utc] Gear UP, IAS 149kt, GS 146kt, ALT 2490ft
[11:46:11utc] Aircraft at 2490ft, IAS 149kt, GS 146kt, HDG 134deg, TAT 10deg, WIND 168/9kt
[11:46:20utc] Aircraft descending, ALT 2410ft, IAS 148kt, GS 144kt, HDG 136deg, VS -853fpm, TAT 10deg, WIND 164/8kt
[11:46:55utc] Gear DOWN, IAS 145kt, GS 138kt, ALT 2000ft
[11:51:12utc] Landed with a landing rate of -103fpm, touchdown speed 147kt, G-force 1.22g, pitch -0.84deg, bank 0.29deg
[11:51:14utc] Spoilers DEPLOYED
[11:51:30utc] Spoilers RETRACTED
[11:51:38utc] FLAPS 4
[11:51:41utc] FLAPS 3
[11:51:44utc] FLAPS 2
[11:51:45utc] Spoilers DEPLOYED
[11:51:47utc] FLAPS 1
[11:51:52utc] Spoilers RETRACTED
[11:51:55utc] FLAPS UP
[11:55:15utc] Aircraft taxiing to the ramp
[11:56:44utc] Engine(s) shutdown
[11:56:44utc] Aircraft parked
[11:56:59utc] Landing lights OFF