The 1989 Boeing 737-300QC, registration ZS-TGG and serial number 24278, is a versatile quick-change aircraft capable of operating as either a passenger transport or a full cargo freighter. The airframe has accumulated 68,627 hours and 48,572 cycles, reflecting a well-documented service life across international operators. Its structural weight limits provide reliable operational flexibility, with a maximum takeoff weight of 61,235 kg, maximum taxi weight of 61,461 kg, maximum landing weight of 51,709 kg, and a maximum zero fuel weight of 48,307 kg. Fuel capacity totals 17,102 kg through the main wing tanks and integral center wing tank, enabling extended regional operations.

Power is provided by two CFM56-3B2 engines, each matched in hours and cycles since new at 59,844 hours and 43,261 cycles. Both engines show 6,141 hours and 4,243 cycles since last shop visit as of the June 2025 update. A full list of life-limited parts demonstrates consistent tracking of each major rotating component, including booster spools, fan disks, HPC and HPT disks, shafts, seals, and low-pressure turbine components, with cycle limits ranging from 15,000 to 30,000 depending on part class. Cycle remaining margins for most LLPs are strong, supporting continued operation with predictable maintenance planning.

The landing gear assemblies include the nose gear (P/N 65-73762-20, S/N S0245P1142) and both main landing gears (P/N 65-73761-108 and 65-73761-107), each with defined overhaul intervals of 21,000 cycles. All gears show over 20,000 cycles remaining until their next overhaul and carry due-dates in November 2032, providing long-term stability for future scheduling. The APU (P/N 380428-6-5, S/N P-60104) is an on-condition unit with 1,893 hours and 1,243 cycles, meeting operational readiness standards for both passenger and freight missions.

The aircraft is equipped with a complete avionics suite suitable for commercial airline operation, including dual air data computers, dual digital stall warning computers, auto-slat control systems, cabin temperature controllers, FMS units, flight control computers, yaw-damper couplers, ELTs, EFIS symbol generators, dual DME systems, TCAS II 8.1, VHF and HF transceivers, GPS/GLS sensor units, weather radar systems, CVR, DFDR, and numerous flight deck control units and power components. With upcoming maintenance checks scheduled at 68,735 hours for the next A-check and 70,074 hours for the next C-check, the aircraft is aligned for near-term operational deployment with predictable maintenance horizons.

Technical Specifications

• Aircraft: 1989 Boeing 737-300QC, ZS-TGG, SN 24278
• Airframe Hours: 68,627
• Airframe Cycles: 48,572

Weight Limits

• Maximum Takeoff Weight: 61,235 kg
• Maximum Taxi Weight: 61,461 kg
• Maximum Landing Weight: 51,709 kg
• Maximum Zero Fuel Weight: 48,307 kg

Fuel Capacity

• Main Wing Tanks: 4,827 kg
• Center Wing Tank: 7,448 kg
• Total Capacity: 17,102 kg

Upcoming Maintenance

• Next A-Check Due: 68,735 hours
• Next C-Check Due: 70,074 hours

Engines – CFM56-3B2:

Engine #1 (SN7253711020)

• TSN: 59,844 Hours
• CSN: 43,261
• Hours Since Last Shop Visit: 6,141
• Cycles Since Last Shop Visit: 4,243
• Spool Booster: P/N 335-009-306-0, S/N BB230496, Cycles: 24,782, Cycle Limit: 30,000, Cycles Remaining to Next Shop Visit: 975
• Fan Disk: P/N 335-014-511-0, S/N DC902567, Cycles: 13,211, Cycle Limit: 24,900, Cycles Remaining to Next Shop Visit: 9,692
• Fan Shaft: P/N 335-006-414-0, S/N D8142811, Cycles: 24,782, Cycle Limit: 30,000, Cycles Remaining to Next Shop Visit: 975
• HPC Rotor Shaft: P/N 1275M37P02, S/N GWN08TJE, Cycles: 13,211, Cycle Limit: 20,000, Cycles Remaining to Next Shop Visit: 2,546
• Stage 1–2 Spool: P/N 1589M66G02, S/N GWN08RHE, Cycles: 11,237, Cycle Limit: 14,462, Cycles Remaining to Next Shop Visit: 3,225
• Stage 3 Disk: P/N 1590M59P01, S/N XAEF2638, Cycles: 13,211, Cycle Limit: 15,757, Cycles Remaining to Next Shop Visit: 2,546
• Stage 4–9 Spool: P/N 1588M89G03, S/N GWNOEKD7, Cycles: 13,192, Cycle Limit: 15,757, Cycles Remaining to Next Shop Visit: 2,565
• CDP Air Seal: P/N 1319M25P02, S/N GFF5GWJA, Cycles: 4,243, Cycle Limit: 18,000, Cycles Remaining to Next Shop Visit: 11,950
• HPT Forward Shaft: P/N 1385M90P04, S/N XAE78167, Cycles: 13,211, Cycle Limit: 17,300, Cycles Remaining to Next Shop Visit: 1,629
• HPT Front Air Seal: P/N 1282M72P05, S/N XAE34805, Cycles: 10,454, Cycle Limit: 14,213, Cycles Remaining to Next Shop Visit: 3,759
• HPT Disk: P/N 1475M29P02, S/N GWN094K6, Cycles: 13,211, Cycle Limit: 15,248, Cycles Remaining to Next Shop Visit: 2,037
• HPT Rear Shaft: P/N 1864M91P02, S/N TMT2B397, Cycles: 12,630, Cycle Limit: 15,757, Cycles Remaining to Next Shop Visit: 3,127
• Stage 1 Disk: P/N 301-331-126-0, S/N BB134056, Cycles: 11,495, Cycle Limit: 20,757, Cycles Remaining to Next Shop Visit: 9,262
• Stage 2 Disk: P/N 301-331-227-0, S/N BB459064, Cycles: 12,875, Cycle Limit: 20,757, Cycles Remaining to Next Shop Visit: 7,882
• Stage 3 Disk: P/N 301-331-322-0, S/N BA496065, Cycles: 16,512, Cycle Limit: 20,757, Cycles Remaining to Next Shop Visit: 4,245
• Stage 4 Disk: P/N 301-331-429-0, S/N BCC83329, Cycles: 15,244, Cycle Limit: 20,757, Cycles Remaining to Next Shop Visit: 5,513
• LPT Conical Support: P/N 305-056-116-0, S/N BB494991, Cycles: 15,639, Cycle Limit: 19,462, Cycles Remaining to Next Shop Visit: 3,823
• LPT Shaft: P/N 301-330-577-0, S/N LA075778, Cycles: 15,087, Cycle Limit: 20,469, Cycles Remaining to Next Shop Visit: 5,382
• Stub Shaft: P/N 301-330-626-0, S/N DC996580, Cycles: 10,951, Cycle Limit: 20,757, Cycles Remaining to Next Shop Visit: 9,806

Engine #2 (SN8587823864)

• TSN: 59,844 Hours
• CSN: 43,261
• Hours Since Last Shop Visit: 6,141
• Cycles Since Last Shop Visit: 4,243
• Spool Booster: P/N 335-009-306-0, S/N BB230496, Cycles: 24,782, Cycle Limit: 30,000, Cycles Remaining to Next Shop Visit: 975
• Fan Disk: P/N 335-014-511-0, S/N DC902567, Cycles: 13,211, Cycle Limit: 24,900, Cycles Remaining to Next Shop Visit: 9,692
• Fan Shaft: P/N 335-006-414-0, S/N D8142811, Cycles: 24,782, Cycle Limit: 30,000, Cycles Remaining to Next Shop Visit: 975
• HPC Rotor Shaft: P/N 1275M37P02, S/N GWN08TJE, Cycles: 13,211, Cycle Limit: 20,000, Cycles Remaining to Next Shop Visit: 2,546
• Stage 1–2 Spool: P/N 1589M66G02, S/N GWN08RHE, Cycles: 11,237, Cycle Limit: 14,462, Cycles Remaining to Next Shop Visit: 3,225
• Stage 3 Disk: P/N 1590M59P01, S/N XAEF2638, Cycles: 13,211, Cycle Limit: 15,757, Cycles Remaining to Next Shop Visit: 2,546
• Stage 4–9 Spool: P/N 1588M89G03, S/N GWNOEKD7, Cycles: 13,192, Cycle Limit: 15,757, Cycles Remaining to Next Shop Visit: 2,565
• CDP Air Seal: P/N 1319M25P02, S/N GFF5GWJA, Cycles: 4,243, Cycle Limit: 18,000, Cycles Remaining to Next Shop Visit: 11,950
• HPT Forward Shaft: P/N 1385M90P04, S/N XAE78167, Cycles: 13,211, Cycle Limit: 17,300, Cycles Remaining to Next Shop Visit: 1,629
• HPT Front Air Seal: P/N 1282M72P05, S/N XAE34805, Cycles: 10,454, Cycle Limit: 14,213, Cycles Remaining to Next Shop Visit: 3,759
• HPT Disk: P/N 1475M29P02, S/N GWN094K6, Cycles: 13,211, Cycle Limit: 15,248, Cycles Remaining to Next Shop Visit: 2,037
• HPT Rear Shaft: P/N 1864M91P02, S/N TMT2B397, Cycles: 12,630, Cycle Limit: 15,757, Cycles Remaining to Next Shop Visit: 3,127
• Stage 1 Disk: P/N 301-331-126-0, S/N BB134056, Cycles: 11,495, Cycle Limit: 20,757, Cycles Remaining to Next Shop Visit: 9,262
• Stage 2 Disk: P/N 301-331-227-0, S/N BB459064, Cycles: 12,875, Cycle Limit: 20,757, Cycles Remaining to Next Shop Visit: 7,882
• Stage 3 Disk: P/N 301-331-322-0, S/N BA496065, Cycles: 16,512, Cycle Limit: 20,757, Cycles Remaining to Next Shop Visit: 4,245
• Stage 4 Disk: P/N 301-331-429-0, S/N BCC83329, Cycles: 15,244, Cycle Limit: 20,757, Cycles Remaining to Next Shop Visit: 5,513
• LPT Conical Support: P/N 305-056-116-0, S/N BB494991, Cycles: 15,639, Cycle Limit: 19,462, Cycles Remaining to Next Shop Visit: 3,823
• LPT Shaft: P/N 301-330-577-0, S/N LA075778, Cycles: 15,087, Cycle Limit: 20,469, Cycles Remaining to Next Shop Visit: 5,382
• Stub Shaft: P/N 301-330-626-0, S/N DC996580, Cycles: 10,951, Cycle Limit: 20,757, Cycles Remaining to Next Shop Visit: 9,806

Landing Gear:

Nose Gear (P/N 65-73762-20, S/N S0245P1142)

• Cycle Limit: 21,000
• Cycles Remaining to Next Shop Visit: 20,092
• Overhaul Due Date: 8/11/2032

RH Main Gear (P/N 65-73761-108, S/N MC04578P2322)

• Cycle Limit: 21,000
• Cycles Remaining to Next Shop Visit: 20,041
• Overhaul Due Date: 13/11/2032

LH Main Gear (P/N 65-73761-107, S/N MC05611P2808)

• Cycle Limit: 21,000
• Cycles Remaining to Next Shop Visit: 20,041
• Overhaul Due Date: 13/11/2032

APU (P/N 380428-6-5, S/N P-60104)

• Condition: On-Condition
• Total Hours: 1,893
• Total Cycles: 1,243

Avionics Suite Summary

• Dual Air Data Computers
• Auto-Throttle Computer
• Dual Digital Stall Warning Computers
• Dual Auto-Slat Computers
• Cabin Temperature Control Unit
• Flight Management Computer
• Flight Instrument Accessory Unit
• IRS Relay Units
• Digital/Analog Adapter
• Engine Vibration Monitoring
• Dual Flight Control Computers
• Yaw-Damper Coupler
• AFC Accessory Unit
• Main Battery and Battery Charger
• Pressure Controller
• Passenger Address Amplifier
• SELECAL Decoder
• Triple VHF Communication Transceivers
• Dual ATC Transponders
• Flight Data Acquisition Unit
• Dual DME Interrogators
• QAR and QAVCR
• EFIS Symbol Generators
• Dual Radio Altimeters
• Enhanced GPWS
• Dual ADF Receivers
• Marker Beacon Receiver
• Dual IRS Units
• Transformer Rectifiers
• Static Inverter
• CMU-ACARS
• Auto Speed Brake Control Unit
• Anti-Skid Control Unit
• Air Conditioning Relays
• APU Power Control Unit
• Fire Detection System
• Window Heat Control Units
• Dual VOR/ILS Receivers
• TCAS 8.1 II Computer
• HF Transceiver
• Weather Radar Receiver/Transmitter
• Cockpit Voice Recorder
• Digital Flight Data Recorder
• Dual GLS Sensor Units
• Dual CDU Units