- Registered owner
- Tobler Hans P
- Location
- Anchorage, AK
- Owner type
- Individual
- Serial number
- 270
- Year built
- 1953
- Type
- Rotorcraft
- Engine
- Reciprocating
- Airworthiness
- Standard, normal
- Airworthiness date
- April 18, 1966
- Certificate issued
- November 14, 2025
- Expires
- November 30, 2032
- Mode S code
- AA12FC
From the FAA registry file of October 24, 2026. The registry lists only the engine series, so ADs for every Franklin 6V4 model are included below.
On this page
Airworthiness directives that may apply · 65
Matched by this aircraft’s airframe and engine models. Each AD’s applicability may narrow it by serial number, part number or equipment.
| 1960 | 1 |
|---|---|
| 1961 | 1 |
| 1962 | 1 |
| 1963 | 1 |
| 1965 | 1 |
| 1970 | 3 |
| 1971 | 1 |
| 1973 | 1 |
| 1974 | 2 |
| 1975 | 1 |
| 1976 | 3 |
| 1977 | 1 |
| 1978 | 1 |
| 1980 | 1 |
| 1981 | 3 |
| 1985 | 1 |
| 1986 | 1 |
| 1987 | 1 |
| 1996 | 1 |
| 1998 | 1 |
| 2000 | 1 |
| 2001 | 1 |
| 2005 | 1 |
| 2009 | 1 |
| 2021 | 1 |
| 2023 | 1 |
See all 68 ADs
Information bulletins that may apply
Advisory, not mandatory.
No bulletins matched this aircraft’s models
NTSB investigations · 2
Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.
NTSB WPR21LA077Accident · Minor injuriesClass 4 · LimitedFinal reportMarana, AZThe pilot's failure to maintain helicopter control, which resulted in a hard landing.NTSB GAA15CA221Accident · No injuriesData collectionFinal reportClanton, ALThe student pilot's abrupt cyclic and collective inputs during the approach to land which resulted in abnormal runway contact and a subsequent tail boom strike by the main rotor blades.
FAA incident reports · 2
FAA accident and incident reports matched to this aircraft by N-number and event date, checked against the reported make and model.
Accident 20210101001599ATaxi · Marana, AZWhile hover taxiing back to ramp on taxiway, a CE-182 entered the same taxiway approaching the helicopter. PIC stated that no radio contact could be made with CE-182. CE-182 continued towards the helicopter and according to PIC approached to within 50 feet of…Accident 20150811016529ALanding: Touchdown · Clanton, AL08/11/2015 1500 Local time winds were observed as 340 at 10 KTS. Student pilot was manipulating the controls of N74823 a Bell 47D1 on final terminating with a 3 foot hover when the aircraft began to settle rapidly with aft movement. CFI kenneth lee gilliland…
Service difficulty reports
No reports matched to N74823General 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 Bell 47D1 aircraft
STCs that may be installed · 126
Approved for this aircraft’s airframe or engine model. The registry doesn’t record which STCs an aircraft has; its records do.
Airframe · Bell 47D1
STC SA800EAInstallation of Whelen Anti-Collision, Position, or Anti-Collision/Position Light System, and applicable associated power suppliesSTC SA5581SWInstallation of ALCOR true-flow/ totalizer systemSTC SH3319NMInstallation of Precise Flight Pulselite Control Unit in the
Landing /Taxi Recognition Visual Control Light system,