diff --git a/internal/domain/fpl.go b/internal/domain/fpl.go
index 60e41b0..b150b1b 100644
--- a/internal/domain/fpl.go
+++ b/internal/domain/fpl.go
@@ -31,37 +31,48 @@ Group 19: Supplementary information (if needed)
 */
 
 /*
-(FPL-CCA1532-IS
--A332/H
--SDE3FGHIJ4J5M1RWY/LB101
--ZSSS2035
--K0859S1040 PIAKS G330 PIMOL A539 BTO W82 DOGAR
--ZBAA0153 ZBYN
--PBN/A1B2B3B4B5D1L1 NAV/ABAS REG/B6513 EET/ZBPE0112 SEL/KMAL PER/C RIF/FRT N640 ZBYN RMK/TCAS EQUIPPED)
-
+Example message:
+(FPL-JAE7433-IS
+-B744/H-SXIRPZJWY/S
+-ZBTJ1755
+-K0926S0920 CG A326 VYK W80 HUR B339 GM A575 MANSA/K0919S0980 A575
+ INTIK/K0917S0960 A575 UDA DCT BULAG A200 HATGA/K0900S1060 A308
+ LARNA DCT RATKO A307 KUMOD R497 TODES B228 ZJ R22 KTL R30 SPB
+ B141 RANVA/N0485F360 UP863 DEREX UP739 KOLJA UN746 GORPI UZ80
+ TILAV UL87 TADUV T173 GED GED2W
+-EDDF0948 EDDK
+-EET/ZMUB0100 UNKL0236 UNWW0332 UNNT0332 USRR0447 USHH0507
+ USSS0535 UUYY0602 ULKK0634 ULWW0653 ULLL0720 EETT0748 EVRR0815
+ ESAA0821 EPWW0848 EDUU0900
+ REG/B2422 SEL/JLAD OPR/JADE CARGO DAT/S RVR/200
+ NAV/RNAV1 RNAV5 RNP4
+ RMK/AGCS EQUIPPED
+ ACARS EQUIPPED/TCAS EQUIPPED/FOREIGN PILOT
+ E/1148 P/TBN R/UV S/M J/LF D/1 15 C YELLOW
+ A/WHITE GREEN)
 */
 
-// FPL 电报体中的飞行计划报文结构
+// FPL represents the structure of a Flight Plan message in the FPL telegram body
 type FPL struct {
 	Category                string `json:"category"`                      // 电报类别: The category of the telegram (e.g., 'FPL' for Flight Plan).
-	FlightNumber            string `json:"flight_number"`                 // 航班号: The flight number (e.g., 'CCA1532').
+	FlightNumber            string `json:"flight_number"`                 // 航班号: The flight number (e.g., 'JAE7433').
 	ReferenceData           string `json:"reference_data,omitempty"`      // 参考数据（可选）: Reference data, if applicable.
-	AircraftID              string `json:"aircraft_id"`                   // 航空器识别标志: The aircraft identification (e.g., 'A332/H').
-	SSRModeAndCode          string `json:"ssr_mode_and_code"`             // SSR 模式及编码: The SSR mode and code (e.g., 'SDE3FGHIJ4J5M1RWY/LB101').
+	AircraftID              string `json:"aircraft_id"`                   // 航空器识别标志: The aircraft identification (e.g., 'B744/H').
+	SSRModeAndCode          string `json:"ssr_mode_and_code"`             // SSR 模式及编码: The SSR mode and code (e.g., 'SXIRPZJWY/S').
 	FlightRulesAndType      string `json:"flight_rules_and_type"`         // 飞行规则和类型: Flight rules and type (e.g., 'IS').
-	CruisingSpeedAndLevel   string `json:"cruising_speed_and_level"`      // 巡航速度和飞行高度: Cruising speed and flight level (e.g., 'K0859S1040').
-	DepartureAirport        string `json:"departure_airport"`             // 起飞机场: Departure airport code (e.g., 'ZSSS').
-	DepartureTime           string `json:"departure_time"`                // 起飞时间: Departure time (e.g., '2035').
-	Route                   string `json:"route"`                         // 航路: The flight route (e.g., 'PIAKS G330 PIMOL A539 BTO W82 DOGAR').
-	DestinationAndTotalTime string `json:"destination_and_total_time"`    // 目的地机场和估计总耗时: Destination airport and estimated total time (e.g., 'ZBAA0153').
-	AlternateAirport        string `json:"alternate_airport,omitempty"`   // 目的地备降机场（可选）: Alternate airport (e.g., 'ZBYN').
+	CruisingSpeedAndLevel   string `json:"cruising_speed_and_level"`      // 巡航速度和飞行高度: Cruising speed and flight level (e.g., 'K0926S0920').
+	DepartureAirport        string `json:"departure_airport"`             // 起飞机场: Departure airport code (e.g., 'ZBTJ').
+	DepartureTime           string `json:"departure_time"`                // 起飞时间: Departure time (e.g., '1755').
+	Route                   string `json:"route"`                         // 航路: The flight route (e.g., 'CG A326 VYK W80 HUR ... GED2W').
+	DestinationAndTotalTime string `json:"destination_and_total_time"`    // 目的地机场和估计总耗时: Destination airport and estimated total time (e.g., 'EDDF0948').
+	AlternateAirport        string `json:"alternate_airport,omitempty"`   // 目的地备降机场（可选）: Alternate airport (e.g., 'EDDK').
 	OtherInfo               string `json:"other_info,omitempty"`          // 其他信息（可选）: Other information.
 	SupplementaryInfo       string `json:"supplementary_info,omitempty"`  // 补充信息（可选）: Supplementary information.
-	EstimatedArrivalTime    string `json:"estimated_arrival_time"`        // 预计到达时间: Estimated time of arrival (e.g., '0153').
+	EstimatedArrivalTime    string `json:"estimated_arrival_time"`        // 预计到达时间: Estimated time of arrival (e.g., '0948').
 	PBN                     string `json:"pbn"`                           // 性能导航: Performance-based navigation equipment (e.g., 'A1B2B3B4B5D1L1').
 	NavigationEquipment     string `json:"navigation_equipment"`          // 导航设备: Navigation equipment (e.g., 'NAV/ABAS').
-	EstimatedElapsedTime    string `json:"estimated_elapsed_time"`        // 估计飞行时间: Estimated elapsed time (e.g., 'EET/ZBPE0112').
-	SELCALCode              string `json:"selcal_code"`                   // SELCAL代码: SELCAL code (e.g., 'KMAL').
+	EstimatedElapsedTime    string `json:"estimated_elapsed_time"`        // 估计飞行时间: Estimated elapsed time (e.g., 'EET/ZMUB0100').
+	SELCALCode              string `json:"selcal_code"`                   // SELCAL代码: SELCAL code (e.g., 'JLAD').
 	PerformanceCategory     string `json:"performance_category"`          // 性能类别: Aircraft performance category (e.g., 'C').
 	RerouteInformation      string `json:"reroute_information,omitempty"` // 重航信息（可选）: Reroute information (e.g., 'RIF/FRT N640 ZBYN').
 	Remarks                 string `json:"remarks,omitempty"`             // 备注（可选）: Remarks (e.g., 'RMK/TCAS EQUIPPED').
@@ -69,7 +80,6 @@ type FPL struct {
 
 // Validate validates the FPL struct fields
 func (f *FPL) Validate() error {
-	//add validation logic here
 	if f.FlightNumber == "" {
 		return fmt.Errorf("flight number is required")
 	}