# N528SW: Dehavilland DHC-3 - Status: Valid registration - Airframe: [Dehavilland DHC-3](https://openairdocs.org/model/dehavilland-dhc-3) (registry code 2802412, 11 seats) - Data sheets: [TCDS A-815](https://openairdocs.org/tcds/A-815) (De Havilland Aircraft of Canada Limited) (OpenAirDocs) - Serial number: 28 - Type: Fixed wing single engine - Engine type: Turbo-prop - Certificate issued: May 21, 2024 - Expires: May 31, 2031 - Mode S code: A6A84B - Registered owner: [Mountain Pt Leasing LLC](https://openairdocs.org/faa-owner/MOUNTAIN%20PT%20LEASING%20LLC) - Location: [Ketchikan, AK](https://openairdocs.org/faa-place/AK/Ketchikan) - Owner type: LLC - Owner's area on the map: 55.7014° N, 131.3298° W: Placed by OpenAirDocs at the center of ZIP code 99901, within about 25 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=528SW - Page: https://openairdocs.org/aircraft/N528SW From the FAA registry file of October 20, 2026. ADs below are matched by the registry's airframe and engine model codes. They may apply; each AD's applicability can narrow it by serial number, part number or installed equipment. This is not a compliance determination. ## ADs that may apply (OpenAirDocs): 28 in force ### Matched by airframe (Dehavilland DHC-3) - [AD 2025-17-08](https://openairdocs.org/ad/2025-17-08): Elevator Structure · Viking Air DHC-3. Effective Sep 29, 2025 - [AD 2023-22-17](https://openairdocs.org/ad/2023-22-17): Engine Mount Section · Viking Air DHC-3. Effective Jan 19, 2024 - [AD 2023-18-03](https://openairdocs.org/ad/2023-18-03): Flight Control System · Viking Air DHC-3. Effective Oct 24, 2023 - [AD 2023-10-02](https://openairdocs.org/ad/2023-10-02): Indicating/Recording System, Navigation · Boeing 18, 23, 35 and 1,060 more. Effective May 26, 2023 - [AD 2022-21-51](https://openairdocs.org/ad/2022-21-51): Elevator Structure · Viking Air DHC-3. Effective Dec 1, 2022 - [AD 2022-05-11](https://openairdocs.org/ad/2022-05-11): Wing Structure · Viking Air DHC-3. Effective Apr 13, 2022 - [AD 2021-24-18](https://openairdocs.org/ad/2021-24-18): Wing Structure · Viking Air DHC-3. Effective Jan 24, 2022 - [AD 2018-21-02](https://openairdocs.org/ad/2018-21-02): Wings · Viking Air DHC-3. Effective Nov 28, 2018 - [AD 2016-10-03](https://openairdocs.org/ad/2016-10-03): Leveling and Weighing · Viking Air DHC-3. Effective May 31, 2016 - [AD 2015-24-02](https://openairdocs.org/ad/2015-24-02): Wings · Viking Air DHC-3. Effective Jan 4, 2016 - [AD 2014-17-01](https://openairdocs.org/ad/2014-17-01): Stabilizers · Viking Air DHC-3. Effective Sep 16, 2014 - [AD 2011-18-11](https://openairdocs.org/ad/2011-18-11): Flight Controls · Viking Air DHC-3. Effective Oct 3, 2011 - [AD 2011-12-02](https://openairdocs.org/ad/2011-12-02): Placards and Markings · Viking Air DHC-3 with STC SA09866SC. Effective Jun 2, 2011 - [AD 2008-12-12](https://openairdocs.org/ad/2008-12-12): Ignition connector plug · Viking Air DHC-2 Mk.I, DHC-2 Mk.II and DHC-3. Effective Jul 23, 2008 - [AD 2005-25-08](https://openairdocs.org/ad/2005-25-08): Electronic Flight Information System (EFIS) · B-N Group BN-2A, 172, 180 and 22 more. Effective Jan 23, 2006 - [AD 2005-01-19](https://openairdocs.org/ad/2005-01-19): Mode S transponders · GARMIN International GTX 330D, GTX 330, GTX 33D and 830 more. Effective Feb 23, 2005 - [AD 2004-24-10](https://openairdocs.org/ad/2004-24-10): Heating blankets on P3 and PY pneumatic lines · Viking Air DHC-3. Effective Jan 6, 2005 - [AD 2004-24-01](https://openairdocs.org/ad/2004-24-01): Elevator servo tab assembly · Viking Air DHC-3. Effective Dec 28, 2004 - [AD 2004-05-01 R1](https://openairdocs.org/ad/2004-05-01-R1): Elevator servo-tab · Viking Air DHC-3. Effective May 25, 2004 - [AD 98-18-08](https://openairdocs.org/ad/98-18-08): Voltage Regulator, Voltage-Ammeter Gauge, and Auxiliary Bus Systems · Viking Air DHC-3 with STC SA3777NM. Effective Oct 10, 1998 - [AD 96-09-04](https://openairdocs.org/ad/96-09-04): Tailplane Main Rib Forward & Lower Flanges · Viking Air DHC-3. Effective May 17, 1996 - [AD 92-08-08](https://openairdocs.org/ad/92-08-08): Fuel Condition Lever Lock · Viking Air DHC-3. Effective May 18, 1992 - [AD 88-15-08](https://openairdocs.org/ad/88-15-08): Utility Seat Forward Leg · Viking Air DHC-3. Effective Aug 27, 1988 - [AD 86-16-12](https://openairdocs.org/ad/86-16-12): Elevator Pushrod Inspection · Viking Air DHC-3. Effective Aug 15, 1986 - [AD 83-04-05](https://openairdocs.org/ad/83-04-05): Control Column Lower Assembly · Viking Air DHC-3. Effective Mar 1, 1983 - [AD 83-02-01](https://openairdocs.org/ad/83-02-01): Wing Strut Tiebar · Viking Air DHC-3. Effective Feb 3, 1983 - [AD 76-08-05](https://openairdocs.org/ad/76-08-05): Various Modifications · Viking Air DHC-3. Effective Apr 29, 1976 - [AD 56-17-02](https://openairdocs.org/ad/56-17-02): Flap Control Restriction · Viking Air DHC-3 ### Historical (superseded or no longer in force) - [AD 2022-23-08](https://openairdocs.org/ad/2022-23-08) (historical): Elevator Structure · Viking Air DHC-3. Effective Nov 2, 2022 - [AD 2011-05-02](https://openairdocs.org/ad/2011-05-02) (historical): Flight Controls · Viking Air DHC-3 with STC SA01059SE. Effective Mar 31, 2011 - [AD 2004-21-06](https://openairdocs.org/ad/2004-21-06) (historical): Firewall Connector Plugs Lockwire Security · Viking Air DHC-3, DHC-2 Mk.I and DHC-2 Mk.II. Effective Dec 6, 2004 - [AD 2004-05-01](https://openairdocs.org/ad/2004-05-01) (historical): Elevator servo-tab · Viking Air DHC-3. Effective Apr 20, 2004 ## Information bulletins (advisory) (2 in force) - [SAIB 2023-05](https://openairdocs.org/saib/2023-05): Horizontal Stabilizer Actuator. Issued Mar 28, 2023 - [SAIB CE-13-18](https://openairdocs.org/saib/CE-13-18): Ice and Rain Protection; Reduced Visibility Flying in Rain or Mist. Issued Mar 8, 2013 ## NTSB investigations None matched to N528SW. ## FAA accident and incident reports None matched to N528SW. ## Service difficulty reports None filed for this aircraft. Reports filed since March 27, 2018, when the mark's previous registration was cancelled. ## Earlier aircraft with N528SW The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N528SW before. - [Cancelled 2018-03-27](https://openairdocs.org/deregistered/N528SW-2018-03-27): Boeing 737-5H4, S/N 26570, built 1992. Registration expired, pending cancellation. Owner: [Southwest Airlines Co](https://openairdocs.org/faa-owner/SOUTHWEST%20AIRLINES%20CO), [Dallas, TX](https://openairdocs.org/faa-place/TX/Dallas) ## Related - Other Dehavilland DHC-3 aircraft: https://openairdocs.org/model/dehavilland-dhc-3/aircraft.md - STCs for the Dehavilland DHC-3: https://openairdocs.org/model/dehavilland-dhc-3/stcs.md --- 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.