Piston helicopter

N135WB

2001 Robinson R44 Raven I

Registered No accidents on file
Built
2001
Serial
1093
Class
Piston helicopter
Engines
Lycoming O-540F1 SERIE
Status
Current as of October 2026
Registered owner
Tim Butterfield Drilling Inc (Corporation)
Based
Somerset, WI
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Registration record

N135WB on the FAA register

Type
2001 Robinson R44 Raven I
Serial
1093
Engines
Lycoming O-540F1 SERIE
Registered owner
Tim Butterfield Drilling Inc
Somerset, WI
Certificate issued
2024-06-15
Airworthiness date
2001-08-29
Registration expires
2031-06-30
Airworthiness class
Standard · normal
Mode S (hex)
A08FBA
Mode S (octal)
50107672
Seats (type)
4
Weight class
up to 12,499 lb
Range (type)
279 nm
Cruise (type)
100 kt
Status
Current as of October 2026
Registry history

Timeline

  • 2031-06-30
    Registration expires (renewal due).
  • 2024-06-15
    Certificate of registration issued as N135WB.
  • 2001-08-29
    Airworthiness date on the current FAA record (standard category (normal)).
Overview

About N135WB

N135WB is a 2001 Robinson R44 Raven I, serial number 1093. The FAA register lists Tim Butterfield Drilling Inc as the registrant in Somerset, Wisconsin. The current certificate of registration was issued on June 15, 2024 and expires on June 30, 2031.

The FAA aircraft reference file describes the type as a piston helicopter, one Lycoming O-540F1 SERIE engine and 4 seats. Published figures for the type give a cruise speed of about 100 knots and a range of about 279 nm; actual performance depends on configuration, load and conditions. Its airworthiness certificate is standard category (normal), dated August 29, 2001.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N135WB.

Cruise
100 kt
Range
279 nm
Fuel burn
15 gph

Published figures for the Robinson R44 Raven I type. They describe the model, not this airframe's equipment or condition. Robinson R44 Raven I specs, prices and for-sale inventory →

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N135WB.

Sources: NTSB aviation accident database and CAROL case system, FAA preliminary accident & incident notices. Search accident records

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Browse: Robinson aircraft for sale· Robinson R44 Raven I overview· Aircraft registered in Wisconsin· Registry by state· FAA registry stats

Data: FAA Aircraft Registry (October 2026), including deregistered aircraft; NTSB and FAA accident data; fyiAero listing history. Individual owners' names are shown to signed-in users and street addresses are never shown. Type figures are published specifications, not this aircraft's.