FSX / P3D Repaint for Payware Model

FSX NASA Boeing 377 Stratocruiser Guppy

NASA-themed repaint textures recreate the distinctive Boeing 377 Stratocruiser “Pregnant Guppy” in classic N941NA markings, enhancing exterior detail while keeping the aircraft’s original flight model and virtual cockpit intact. Designed for Microsoft Flight Simulator X, it requires the payware A2A Simulations Boeing WoS B377 Pregnant Guppy package.

No ratings yet Rate 2.1k downloads since 2013 11.85 MB Scanned clean · Jul 2026 Added
Flight Simulator X Prepar3D
Repaint — payware base required

A repaint of the payware a2a Simulations Boeing WoS B377 Pregnant Guppy. Textures only. By Sean Doran.

Screenshot of NASA Boeing 377 Stratocruiser Guppy in flight.

Screenshot of NASA Boeing 377 Stratocruiser Guppy in flight.

Place the texture Folder in the .. C:\Program Files\Microsoft Games\Microsoft Flight Simulator X\SimObjects\Airplanes\WoS_B377_Pregnant_Guppy Folder. Then add the following text to your aircraft.CFG, changing the x in [fltsim.x] to the next number in line.

[fltsim.X]
title=Boeing 377 Pregnant Guppy, NASA
sim=b377pg
model=
panel=
sound=
texture=nasa
kb_checklists=b377_check
reference=
description=This unique aircraft is a modification of the Boeing 377. The aircraft, a former passenger liner with Pan-Am, was stripped of all non-essential systems, including the pressurization system. The fuselage was lengthened by 16 feet, 8 inches and a third 'bubble' of 18 feet, 6 inches in diameter was added to the upper fuselage structure. The plane was modified so that the entire rear fuselage and tail could be unbolted and carted away from the forward section, to allow for easy loading of the Saturn V S-IVB booster. The plane flew much as a normal Boeing 377, with the exception of some additional drag. Otherwise, the procedures and characteristics are the same as the standard Stratocruiser.
ui_manufacturer=Boeing
ui_type=377 "Pregnant Guppy"
ui_variation="NASA"
ui_typerole="Four Engine Prop"
ui_createdby="A2A Simulations Inc."
atc_heavy=0
atc_id_enable=1
atc_id=N941NA
atc_airline=NASA
atc_flight_number=941
prop_anim_ratio=0.9
atc_id_color=0x00000000
visual_damage=0
atc_id_font=Verdana,-11,1,600,0

Ready to download NASA Boeing 377 Stratocruiser Guppy?

Free for all simmers · 11.85 MB · Scanned clean Jul 2026

File information

Filename
377gpnas.zip
File size
11.85 MB
Added
Virus scan
Clean ClamAV · Jul 2026
Access
Freeware
Content rating
Everyone

Download speed: Free tier is capped at 0.5 Mbps (this file takes approximately 3 mins at the cap). PRO members download at full line speed.

How to install this mod

FSX / P3D Repaint for Payware Model
  1. Extract the downloaded archive

    Use 7-Zip (free) or WinRAR to extract the ZIP to a temporary folder. Don't install while still zipped — the simulator can't read inside ZIP files.
  2. Add livery to base aircraft folder

    Place the texture folder (typically texture.{airline}) inside FSX\SimObjects\Airplanes\{base-aircraft}\.
  3. Update aircraft.cfg

    Open the base aircraft.cfg in Notepad. Add a new [fltsim.X] section per the readme.
  4. Always read the included readme

    Every mod ships with a readme.txt or README file. It tells you exactly where files go, what dependencies are needed, and any quirks specific to this add-on.

What’s inside this archive

The archive 377gpnas.zip has 36 files and directories contained within it.

File Contents

This list displays the first 500 files in the package. If the package has more, you will need to download it to view them.

Filename/Directory File Date File Size
nasa-AVS.gif08.22.089.50 kB
nasa-SOH.jpg08.22.0818.84 kB
nasa1.jpg08.21.0875.40 kB
nasa2.jpg08.21.0841.23 kB
nasa3.jpg08.21.0840.92 kB
texture.nasa08.22.080 B
b377_10_t.dds08.22.081.00 MB
b377_10_t_spec.dds08.22.081.00 MB
b377_11_t.dds08.22.081.00 MB
b377_11_t_spec.dds08.22.081.00 MB
b377_1_t.dds08.22.081.00 MB
b377_1_t_bump.dds08.21.084.00 MB
b377_1_t_spec.dds08.22.081.00 MB
b377_2_t.dds08.22.081.00 MB
b377_2_t_bump.dds08.21.084.00 MB
b377_2_t_spec.dds08.22.081.00 MB
b377_3_t.dds08.22.081.00 MB
b377_3_t_spec.dds08.17.081.00 MB
b377_4_t.dds08.22.081.00 MB
b377_4_t_spec.dds08.17.081.00 MB
b377_5_t.dds08.22.081.00 MB
b377_5_t_spec.dds08.17.081.00 MB
b377_6_t.dds08.22.081.00 MB
b377_6_t_spec.dds08.17.081.00 MB
b377_7_t.dds08.22.081.00 MB
b377_7_t_spec.dds08.17.081.00 MB
b377_8_t.dds08.22.081.00 MB
b377_8_t_spec.dds08.10.081.00 MB
b377_9_t.dds08.22.081.00 MB
b377_9_t_spec.dds08.17.081.00 MB
texture.cfg02.04.08137 B
Thumbnail.jpg08.22.085.35 kB
WOS 377.txt08.22.081.97 kB
wos_377_guppy_nasa08.22.080 B
flyawaysimulation.txt10.29.13959 B
Go to Fly Away Simulation.url01.22.1652 B

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  1. Antonio

    I've only found textures, where can I download the plane?

    Link

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