# Weatherly 620TP - Type: Aircraft model (FAA registry) - Registry code: 9630604 - Manufacturer (registry): WEATHERLY - Model: 620TP - Aircraft type: Fixed wing single engine - Category: Airplane - Engines: 1 · Turbo-prop - Seats: 1 - Weight class: Up to 12,499 lb - Certification: Type certificated - Data sheet: [TCDS A26WE](https://openairdocs.org/tcds/A26WE) (OpenAirDocs) - Holder: Weatherly Aircraft Company - Registered aircraft: 1 - Page: https://openairdocs.org/model/weatherly-620tp Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker. ## ADs that may apply (OpenAirDocs) Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2020-10-03](https://openairdocs.org/ad/2020-10-03): Wing Attach Hinge Fitting · Weatherly 201, 201A, 201B and 6 more. Effective Jun 15, 2020 - [AD 2016-07-11](https://openairdocs.org/ad/2016-07-11): Wing Attach Fittings · Weatherly 201, 201A, 201B and 6 more. Effective Apr 15, 2016 ## Registered aircraft (1) - [N9259W](https://openairdocs.org/aircraft/N9259W): [Rons Air Service Inc](https://openairdocs.org/faa-owner/RONS%20AIR%20SERVICE%20INC), [Two Buttes, CO](https://openairdocs.org/faa-place/CO/Two%20Buttes), S/N 1502 ## NTSB investigations (2) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB FTW94LA297](https://openairdocs.org/ntsb/FTW94LA297), Sep 13, 1994: Weatherly 620TP (N4607C), Montrose, AR, substantial damage. Probable cause: THE PILOT'S FAILURE TO MAINTAIN AIRSPEED AND THE RESULTANT AERODYNAMIC STALL. - [NTSB MKC89LA105](https://openairdocs.org/ntsb/MKC89LA105), May 8, 1989: Weatherly 620TP (N4607C), Montrose, AR, substantial damage. Probable cause: FAILURE OF THE PILOT IN COMMAND TO MAINTAIN CONTROL OF THE AIRCRAFT DURING LANDING ADVERSELY AFFECTED BY THE EXISTANCE OF A TAILWIND OF AVERAGE PROPORTIONS. ## FAA accident and incident reports (2) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Accident 19940913026899A](https://openairdocs.org/incident/19940913026899A), Sep 13, 1994: Wthrly 620TP (N4607C), Montrose, AR, Substantial damage. Reduced power on final. Nosed whipped horizontily back and forth. Pushed stick forward. Impacted. Too slow. Stalled - [Accident 19890508011609A](https://openairdocs.org/incident/19890508011609A), May 8, 1989: Wthrly 620TP (N4607C), Montrose, AR, Substantial damage. Overran the runway into a ditch on landing. Was landing downwind. ## STCs that may be installed (OpenAirDocs) (20) Approved for this model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has. - [STC SA04652CH](https://openairdocs.org/stc/SA04652CH): To allow use of 100R grade aviation fuel meeting Swift Fuel, LLC specification. Swift Fuels LLC - [STC SA7965SW](https://openairdocs.org/stc/SA7965SW): Application of fabric and polyurethane finishing system. Shady Aviation LLC - [STC SA01757WI](https://openairdocs.org/stc/SA01757WI): To allow the use of UL91 or UL94 (minimum) grade aviation fuel. Swift Fuels LLC - [STC SA01831WI](https://openairdocs.org/stc/SA01831WI): To allow the use of UL91 (minimum) grade aviation fuel. Petersen Aviation Inc - [STC SA5190NM](https://openairdocs.org/stc/SA5190NM): Installation of Gustin Aviation chip detector light system. A & L Aircraft Parts Inc - [STC SA2693NM](https://openairdocs.org/stc/SA2693NM): Installation of Electronics International digital volt/amp gauges and accessories. Electronics International Inc - [STC SA4005NM](https://openairdocs.org/stc/SA4005NM): Precise Flight Inc. Pulselite Control System. Precise Flight Inc - [STC SA00680SE](https://openairdocs.org/stc/SA00680SE): Installation of Electronics International model UBG-16 or UBG-16T bar graph engine analyzer. Electronics International - [STC SA01258SE](https://openairdocs.org/stc/SA01258SE): Installation of the Automatic Flagman Dispenser Models in accordance with Automatic Flagman Master Drawing Lists specified in attached AML, or later FAA approved revision.This STC supercedes several existing STC s as listed in the notes on the attached AML. R-S Sales Inc - [STC SA330NW](https://openairdocs.org/stc/SA330NW): Installation of automatic flagman model no 4. R-S Sales Inc - [STC SA02168AK](https://openairdocs.org/stc/SA02168AK): Installation of hourmeter airspeed switch. For unpressurized aircraft only. Pressurized aircraft must have pressurization system deactivated. Avalaska Inc - [STC SA2687NM](https://openairdocs.org/stc/SA2687NM): Installation of Truboplus/ Electronics Int'l gauges and switches. Aero Manufacturing Inc - [STC SA00458SE](https://openairdocs.org/stc/SA00458SE): Fabrication and installation of vortex generators mounted on wings. Aeronautical Testing Service Inc - [STC SA1626NM PAGE 2](https://openairdocs.org/stc/SA1626NM%20PAGE%202): Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series). Electronics International - [STC SA2350NM PAGE 2](https://openairdocs.org/stc/SA2350NM%20PAGE%202): Installation of Electronics International Inc digital carburetor/outside air temperature gauges. Electronics International - [STC SA4302NM](https://openairdocs.org/stc/SA4302NM): Installation of Electronics Int'l digital automatic engine analyzer. Electronics International - [STC SA2423SO](https://openairdocs.org/stc/SA2423SO): Installation of Chemical Evacuation System to remove residue from the agricultural spray dispersal system. Paul S Woods - [STC SA3862NM PAGE 2](https://openairdocs.org/stc/SA3862NM%20PAGE%202): Installation of Electronics International Primary TIT/EGT/CHT instruments, remote switches and associated accessories. Electronics International - [STC SA2190NM PAGE 2](https://openairdocs.org/stc/SA2190NM%20PAGE%202): Installation of electronics International Digital Volt/Amp Gauges and Accessories. Electronics International - [STC SA2350NM](https://openairdocs.org/stc/SA2350NM) (historical): Installation of Electronics International Inc digital carburetor/outside air temperature gauges listed on the attached continuation sheet and the associated accessories. Electronics International --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.