- Registered owner
- Cline Air Services LLC
- Location
- Ellensburg, WA
- Owner type
- LLC
- Serial number
- 5003
- Year built
- 1994
- Type
- Rotorcraft
- Engine
- Turbo-shaft
- Airworthiness
- Multiple
- Airworthiness date
- September 9, 2002
- Certificate issued
- September 21, 2004
- Expires
- April 30, 2028
- Mode S code
- A5E9BE
From the FAA registry file of October 24, 2026. The registry lists only the engine series, so ADs for every Allison 250 model are included below.
On this page
Airworthiness directives that may apply · 61
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1968 | 2 |
|---|---|
| 1969 | 4 |
| 1972 | 1 |
| 1973 | 1 |
| 1974 | 1 |
| 1977 | 2 |
| 1978 | 1 |
| 1979 | 3 |
| 1980 | 1 |
| 1981 | 1 |
| 1982 | 4 |
| 1983 | 2 |
| 1984 | 2 |
| 1985 | 1 |
| 1986 | 8 |
| 1988 | 1 |
| 1989 | 2 |
| 1994 | 1 |
| 1996 | 2 |
| 1997 | 2 |
| 1998 | 1 |
| 1999 | 1 |
| 2001 | 1 |
| 2002 | 2 |
| 2003 | 1 |
| 2004 | 1 |
| 2005 | 5 |
| 2006 | 3 |
| 2007 | 2 |
| 2012 | 3 |
| 2015 | 2 |
| 2017 | 1 |
| 2018 | 3 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 1 |
Airframe · Enstrom Helicopter 480
AD 2023-11-07Ground Proximity SystemAD 2018-02-01Main Rotor HeadAD 2017-26-03Main Rotor SystemInformation bulletins that may apply · 7
Advisory, not mandatory.
Airframe · Enstrom Helicopter 480
SAIB SW-05-81Engine · Allison 250 series
SAIB NE-06-52SAIB NE-06-12R1SAIB NE-04-58SAIB NE-04-57SAIB NE-04-56SAIB CE-01-10Historical bulletins · 1
NTSB investigations
No NTSB investigations matched to N480MTMatched by N-number and event date, checked against the reported serial number, make and model. Investigations from before this aircraft carried the mark are under Earlier aircraft. Investigations on Enstrom Helicopter 480 aircraft
FAA incident reports · 1
FAA accident and incident reports matched to this aircraft by N-number and event date, checked against the reported make and model.
Service difficulty reports
No reports matched to N480MTGeneral aviation reporting is voluntary. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Reports on Enstrom Helicopter 480 aircraft
STCs that may be installed · 33
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Airframe · Enstrom Helicopter 480
STC SR02813CHFabrication of Isolair Innovator II Model 3900-480 Spray SystemSTC SR04637CHReplacement of existing main ship battery with Lithium Ion Battery and installation of Annunciator Control
PanelSTC SH3319NMInstallation of Precise Flight Pulselite Control Unit in the
Landing /Taxi Recognition Visual Control Light system,