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Illustration of a Boeing 737-3H4. Not a photo of N137CG.
Illustration of the Boeing 737-3H4, not a photo of N137CG.

N137CG 1995 Boeing 737-3H4

Serial number 27700. Registered to CSC Delaware Trust Co Trustee, Wilmington, DE, US.

  • 1995Built
  • 149Seats
  • 2,255 nmRange
  • 430 ktCruise
  • 37,000 ftCeiling

SPECIFICATIONS

Boeing 737-3H4 specs

Published figures for the type, from public sources. A given aircraft varies with its completion, weight and mods.

Model
Boeing 737-3H4
Year
1995
Serial number
27700
Engines
2 × CFM INTL CFM56-3B-1
Thrust
22,100 lbf each
Seats
Up to 149
Range
2,255 nm
Cruise
430 ktas
Published Mach
0.74
Ceiling
37,000 ft
Fuel capacity
5,311 US gal
ICAO type
B733
Exterior
White with red/blue Coulson Fireliner markings

THE AIRCRAFT’S LIFE

N137CG, from delivery to today.

Registration events from FAA records, compiled November 2025. Maintenance, damage and component history live in the logbooks, not the registry.

  1. Southwest Airlines

    Delivered new to Southwest Airlines (entered service as N617SW in Oct 1995).

    FAA registry

  2. Southwest Airlines / stored

    Withdrawn from use and moved to storage; sold/withdrawn from Southwest fleet in early 2017.

    FAA registry

  3. Coulson Aviation USA

    Acquired by Coulson and converted to Fireliner configuration; operated as Bomber 137 (re-registered N137CG by Sep 2017).

    FAA registry

  4. Coulson Aviation

    Operated under contract/lease to Australian state firefighting agencies for seasonal operations (carried the name 'Gaia' while deployed).

    FAA registry

FAA REGISTRATION

Registration details

Registration
N137CG
Status
Current as of November 2025
Certificate issued
Jan 18, 2018
Airworthiness date
Nov 13, 2018
Last FAA action
Jan 22, 2025
Registration expires
Jan 31, 2028
Mode S code (hex)
A0956B
Aircraft category
Fixed-wing multi-engine
Weight class
Over 20,000lbs

From FAA registry data as of November 2025. Check the FAA registry for the current record.

OWNERSHIP

Registered owner

CSC Delaware Trust Co Trustee

Corporation · Wilmington, DE, US

ESTIMATED VALUE

What N137CG might be worth

No estimate on record

Value depends on total time, engine program, damage history and the completeness of the logbooks.

Open the aircraft value tool

EQUIPMENT AND HISTORY

As reported in public sources

Cabin
Converted firefighting tank installation; can be reconfigured to carry up to ~72 passengers/firefighters when fitted with seats.
Interior
Fire retardant tank system installed in main deck; modified internal layout to carry mission systems and auxiliary crew seating; typical passenger cabin removed or partially retained for mission use.

Listings and registries are not the logbooks. A pre-buy confirms equipment, program status and damage history from the records themselves.

RESEARCH NOTES

About N137CG

Compiled with AI assistance from the public sources listed below, November 2025. Not checked against the aircraft's logbooks.

Overview

This article covers airframe N137CG, a Boeing-built narrow-body originally manufactured in 1995 with manufacturer's serial number 27700. The airframe is a converted firefighting tanker based on the Boeing 737-3H4 (737-300 Fireliner conversion) originally produced by The Boeing Company. It is registered in the US and is recorded as owned by CSC Delaware Trust Co Trustee (a corporation) of Wilmington, DE, US. Operator/home base detail, registry action chronology, and formal valuation or condition summaries are not published for this specific registration.

Operations & Cabin

The airframe carries a purpose-built cabin conversion featuring a firefighting tank installation; the tanked interior can be restored or reconfigured to carry up to approximately 72 passengers or firefighters when fitted with seats. Specific avionics fit and mission equipment lists are not published for this registration; however, the primary mission profile is the fixed-wing multi-engine firefighting role enabled by the conversion. Operator base and routine route schedules are not published; maintenance considerations for this individual airframe would focus on inspection and upkeep of the tank installation, delivery plumbing, and associated airframe modifications required by the firefighting role.

Model & Market Context

This airframe belongs to a converted derivative of the Boeing 737-300 family, adapted specifically for aerial firefighting tasks and retaining the type’s original turbofan propulsion configuration (CFM56-3B-1) and commercial-origin fuselage. Its performance figures, cruise 430 kts, range 2,255 nm, and service ceiling 37,000 ft, define a niche suitable for rapid-response and regional tanker assignments rather than long-haul passenger transport. Buyer interest, charter suitability, and resale considerations for this airframe are driven principally by its conversion status, calendar age (1995) and serial lineage (27700), which affect regulatory recertification, specialized maintenance, and residual market demand.

MOVEMENTS

Last reported flights

DateFromTo
KSMX Santa Maria Public / Capt G Allan Hancock Field KTRM Jacqueline Cochran Regional Airport
KSMX Santa Maria Public / Capt G Allan Hancock Field KSMX Santa Maria Public / Capt G Allan Hancock Field
KSMX Santa Maria Public / Capt G Allan Hancock Field KSMX Santa Maria Public / Capt G Allan Hancock Field
KRDD Redding Municipal Airport Not reported

Public ADS-B and spotter reports up to November 2025. Not a live track.

SOURCES

Where this page comes from

Built from FAA registry records, manufacturer specifications, and public flight-tracking and market data, compiled November 2025. Values come from Radar’s aircraft value model. Owners and operators can ask for a correction or removal.

BUYING, SELLING OR FINANCING

What to check before a deal