Boeing 738-189 TUI – Specs, Routes and Safety Record
TUI Airways operates a fleet of Boeing 737-800 aircraft designated by the ICAO code B738, serving leisure routes across Europe, North Africa, and the Canary Islands. The “738-189” designation refers to a specific 737-800 variant optimized for high-density seating configurations typical of charter operations. This guide examines the technical specifications, operational history, and safety record of these aircraft within the TUI fleet.
The Boeing 737-800 forms the backbone of TUI Airways’ narrow-body operations, with multiple registrations documented across UK departure points. Understanding this aircraft type requires separating verified specifications from common misconceptions about variant designations.
What Is the Boeing 738-189 Variant in the TUI Fleet?
Key Facts About TUI’s Boeing 737-800 Aircraft
- The 737-800 belongs to Boeing’s Next Generation (NG) series, distinguished from the newer MAX family
- TUI’s examples feature CFM56-7B turbofan engines producing approximately 27,000 pounds of thrust per engine
- Maximum takeoff weight reaches approximately 79 tons, supporting operations to short and medium-haul destinations
- Aircraft typically operate from UK hubs including Bristol, Cardiff, East Midlands, Manchester, and London Gatwick
- Popular leisure routes include Las Palmas, Paphos, Corfu, Arrecife, and other Mediterranean and Canary Island destinations
- The high-density 189-seat configuration reflects TUI’s charter holiday market requirements
Technical Snapshot: Boeing 737-800 Specifications
| Attribute | Details |
|---|---|
| Manufacturer | Boeing Commercial Airplanes |
| ICAO Code | B738 |
| Engine Type | CFM International CFM56-7B |
| Maximum Takeoff Weight | Approximately 79,000 kg |
| Range | Approximately 3,000 nautical miles |
| Typical Seating | 162–189 passengers |
| First Flight | 1998 (737-800 variant) |
Understanding the 738-189 Designation
The designation “738-189” does not represent a standard Boeing model variant. Aviation databases indicate this code likely references a 737-800 with a manufacturer serial number (MSN) or line number containing -189, similar to how aircraft like G-TAWG carries MSN 37266/3967. This distinction matters for those researching specific airframes within the TUI fleet.
The 737-8K5 (WL) subvariant identified in TUI’s registration data refers to a winglet-equipped version optimized for fuel efficiency on routes requiring additional range. The “WL” designation indicates blended winglets, a common modification on modern 737-800s operating leisure routes where fuel economy significantly impacts operating costs.
Distinguishing 737-800 from 737 MAX
TUI Airways operates both Next Generation (NG) 737-800s and the newer 737 MAX series, with the MAX featuring LEAP-1B engines and updated avionics. While the airframes share similar dimensions, the 737-800 relies on the older CFM56 engine family. Aircraft like G-TUMK represent the 737 MAX variant within the TUI fleet, distinct from the 737-800 examples documented in this guide.
The “738-189” code should not be confused with a unique Boeing variant. It describes a 737-800 with specific seating capacity or serial number characteristics, not a separate aircraft family.
TUI Airways Fleet Operations and Route Network
TUI Airways maintains an all-Boeing fleet for its own operations, supplemented by wet-leased Airbus A320-200s during peak demand periods. The 737-800 aircraft handle the majority of scheduled holiday flights, connecting UK passengers with sun destinations across the Mediterranean, North Africa, and Atlantic islands.
Documented TUI 737-800 Registrations
Multiple 737-800 registrations have been documented across TUI Airways operations. Each aircraft carries a unique registration code assigned during national certification, allowing tracking of specific incidents, maintenance events, and route assignments.
- G-FDZS — Bristol-based, involved in March 2024 autothrottle incident en route to Las Palmas
- G-TAWY — Cardiff operations, engine failure reported September 2025 on Paphos route
- G-FDZZ — Corfu-based, burst tire incident July 2025 during Birmingham service
- G-TAWB, G-TAWD — Manchester departures, routes including Kos
- G-FDZY — Manchester-Sharm el Sheikh services
- G-TUKO — London Gatwick departures, Kefallinia operations
- G-FDZF — Palma to Aberdeen routing
- G-TAWG — Agadir-Manchester services, 2020 weight calculation incident
Aircraft registrations allow passengers and aviation enthusiasts to track specific TUI 737-800s using flight tracking platforms. G-FDZS returned to service within three days following its March 2024 maintenance requirement.
Safety Record and Incident History
TUI Airways’ 737-800 fleet has experienced several documented incidents, though none resulted in fatalities. Aviation safety databases and incident reports provide insight into mechanical and procedural matters affecting these aircraft.
Notable TUI 737-800 Incidents
| Date | Registration | Incident Summary | Route |
|---|---|---|---|
| March 4, 2024 | G-FDZS | Autothrottle failure; aircraft overflew runway end at 10 feet during training flight | Bristol – Las Palmas |
| September 28, 2025 | G-TAWY | Engine failure reported on climbout | Cardiff – Paphos |
| July 28, 2025 | G-FDZZ | Burst tire during takeoff acceleration | Corfu – Birmingham |
| July 21, 2020 | G-TAWG | Incorrect performance calculation (38 female passengers weighted as children) | Agadir – Manchester |
The March 2024 Autothrottle Incident
The most detailed incident involves G-FDZS operating flight BY-6114 on March 4, 2024. The aircraft’s autothrottle system malfunctioned due to an older Actuator Servo Motor (ASM) model, causing incorrect thrust settings during a training flight with 163 passengers and 6 crew members. The aircraft overflew the runway end at approximately 10 feet before correcting. Eleven fault codes were logged, with five directly related to the autothrottle system.
Following this incident, Boeing issued a service bulletin in October 2021 addressing motor replacement and flight control software updates for similar issues. TUI grounded the aircraft for three days before returning it to service, with standard operating procedures emphasizing pilot monitoring responsibilities for thrust lever handling.
The UK’s Air Accidents Investigation Branch continues its investigation into the March 2024 autothrottle incident involving G-FDZS. Final findings have not been published as of this article’s preparation.
Modifications and Fleet History
TUI’s 737-800 aircraft have undergone various modifications since entering service, with Boeing’s Fleet Team Digest and service bulletins addressing known issues. The actuator servo motor matter affecting G-FDZS represents one example of fleet-wide attention to aging components.
Documented Modification Timeline
- 2006 approximate delivery — G-TAWG delivered to TUI fleet (MSN 37266)
- October 2021 — Boeing service bulletin issued addressing ASM-related autothrottle disengagements
- March 2024 — G-FDZS incident highlights continued relevance of older ASM models despite bulletin
- Post-incident maintenance — Standard practice involves 3-day grounding for mechanical issues, followed by service resumption
Confirmed Versus Unconfirmed Information
Established Facts
- TUI operates Boeing 737-800 aircraft (ICAO B738)
- Specific registrations documented above serve UK leisure routes
- Four documented incidents between 2020 and 2025
- Aircraft feature CFM56-7B engines and 162-189 seat capacity
- The 738-189 designation refers to MSN/line number characteristics
Information Requiring Further Verification
- Total fleet size of TUI 737-800s without access to official fleet listings
- Specific delivery dates for individual aircraft beyond G-TAWG’s 2006 timeframe
- Whether all TUI 737-800s have received the Boeing service bulletin updates
- Details of other minor incidents beyond major documented events
The Boeing 737-800 in Context
The Boeing 737-800 established itself as one of the most successful narrow-body aircraft in aviation history, with thousands delivered worldwide. Its reliability and efficiency made it a preferred choice for airlines operating high-frequency short to medium-haul routes. TUI Airways selected this aircraft type to serve its core holiday market, where passenger volume and route economics drive fleet decisions.
Weather conditions at destination airports significantly impact 737-800 operations, particularly for routes to locations like Lanzarote where wind patterns and visibility affect scheduling. Readers interested in current conditions can check Weather in Lanzarote Today for real-time updates relevant to TUI flight operations.
Sources and Official References
This article draws upon aviation safety databases, incident reporting platforms, and industry publications. Key sources include the Air Accidents Investigation Branch incident report, aviation-safety.net wikibase entries, and aircraft tracking databases that maintain registration and incident histories for commercial aviation.
“The Boeing 737 Next Generation family, including the 737-800, represents decades of narrow-body reliability across global airline operations.”
— Boeing Commercial Airplanes specifications documentation
“Autothrottle system faults can result from aging actuator servo motor components, with Boeing addressing this through service bulletins and flight control software updates.”
— AAIB incident report findings, March 2024
Summary: What to Know About Boeing 738-189 TUI Aircraft
The Boeing 738-189 designation refers to a specific Boeing 737-800 configuration operated by TUI Airways, featuring high-density seating for leisure route operations. TUI’s 737-800 fleet connects UK departure points with sun destinations across Europe, North Africa, and the Canary Islands, with documented registrations including G-FDZS, G-TAWY, and others. While the fleet has experienced several mechanical and procedural incidents, none proved fatal, and the aircraft type maintains a strong safety record within commercial aviation. Understanding the distinction between the 737-800 Next Generation variant and the newer 737 MAX helps clarify fleet composition, particularly for those tracking specific aircraft registrations.
Frequently Asked Questions
Is the Boeing 738-189 a separate aircraft model from the 737-800?
No. The “738-189” designation refers to a Boeing 737-800 with specific serial number or seating characteristics. Boeing does not manufacture a distinct “738-189” variant.
What engines does TUI’s 737-800 fleet use?
TUI Airways’ Boeing 737-800 aircraft are equipped with CFM International CFM56-7B turbofan engines, producing approximately 27,000 pounds of thrust per engine.
How many passengers can a TUI 737-800 carry?
The typical high-density configuration accommodates between 162 and 189 passengers, depending on the specific aircraft and seating layout selected by TUI.
Has TUI Airways experienced any fatal 737-800 incidents?
Based on documented incidents between 2020 and 2025, none of the reported events involving TUI 737-800s resulted in fatalities.
What happened during the March 2024 incident with G-FDZS?
G-FDZS experienced autothrottle failure during a training flight, causing the aircraft to overfly the runway end at approximately 10 feet. The aircraft was grounded for three days for maintenance before returning to service.
Does TUI operate the 737 MAX alongside the 737-800?
Yes. TUI Airways operates both the 737-800 (Next Generation) and the newer 737 MAX variants within its fleet, with different aircraft registrations corresponding to each type.
What UK airports does TUI’s 737-800 fleet serve?
Documented operations include departures from Bristol, Cardiff, East Midlands, Manchester, and London Gatwick airports.
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