# N979DL: Thiessen Duane D CH 750 STOL

- Status: Valid registration
- Airframe: [Thiessen Duane D CH 750 STOL](https://openairdocs.org/model/thiessen-duane-d-ch-750-stol) (registry code 05643C0, 2 seats)
- Serial number: 8348
- Type: Fixed wing single engine
- Engine type: 4 cycle
- Certificate issued: August 15, 2025
- Expires: August 31, 2032
- Mode S code: ADA56A
- Registered owner: [Thiessen Duane D](https://openairdocs.org/faa-owner/THIESSEN%20DUANE%20D)
- Location: [Pensacola, FL](https://openairdocs.org/faa-place/FL/Pensacola)
- Owner type: Individual
- Owner's area on the map: 30.5322° N, 87.2225° W: Placed by OpenAirDocs at the center of ZIP code 32514, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=979DL
- Page: https://openairdocs.org/aircraft/N979DL

From the FAA registry file of October 24, 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): 0 in force

### Matched by airframe (Thiessen Duane D CH 750 STOL)

None in force.

## Information bulletins (advisory)

None matched.

## NTSB investigations

None matched to N979DL.

## FAA accident and incident reports

None matched to N979DL.

## Reports on N979DL not matched to an aircraft (1)

They name N979DL, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [Incident 19950916035849I](https://openairdocs.org/incident/19950916035849I), Sep 16, 1995: Doug MD88 (N979DL), Charleston, SC, Minor damage. Landed in heavy rain. Hydroplaned. Unable stop departed rwy trying for taxiway. Recovered. Tires had to be replaced

## Service difficulty reports

None filed for this aircraft. Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

## Service difficulty reports on N979DL not matched to an aircraft (204, newest 50)

They name N979DL, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft.

- [SDR DALA2020042102285](https://openairdocs.org/sdr/DALA2020042102285), Apr 20, 2020: BATTERY PACK. DISCHARGED. THE CABIN EMERGENCY EXIT IDENTIFIERS FORWARD OF THE FORWARD OVERWING EXIT HATCHES, BOTH LEFT AND RIGHT ARE INOPERATIVE. MAINTENANCE REPLACED THE BATTERY PACK RE
- [SDR DALA2020042002278](https://openairdocs.org/sdr/DALA2020042002278), Apr 18, 2020: POWERPACK. INOPERATIVE. THE EMERGENCY LIGHTS IN THE AFT 6 ROWS IN THE MAIN CABIN ARE INOPERATIVE. MAINTENANCE REPLACED THE POWER PACK PER MD88 AMM 33-53. THE CABIN EMERGENCY LIGHTS NOW
- [SDR DALA2020031601857](https://openairdocs.org/sdr/DALA2020031601857), Mar 16, 2020: BATTERY. DISCHARGED. OVERHEAD EMER LIGHTS FROM SEAT 25 BACK INOP. RPLCD BATTERIES IN EMER LIGHT BATTERY PACK. OPS CK GOOD ALL WORK IAW MD88 AMM 33-53. (LP6639260)
- [SDR DALA201912227477](https://openairdocs.org/sdr/DALA201912227477), Dec 17, 2019: ACM. SEIZED. ATB DUE TO UNABLE TO PRESSURIZE. FOUND LEFT ACM SEIZED AND REPLACED IT.
- [SDR DALA2019052803196](https://openairdocs.org/sdr/DALA2019052803196), May 24, 2019: SMOKE DETECTOR. DEFECTIVE. LEFT AFT LAVATORY SMOKE DETECTOR SOUNDING CONSTANTLY/NO SMOKE OR ODORS PRESENT. THE SMOKE DETECTOR WAS REPLACED. (LP1089857)
- [SDR DALA2019041542419](https://openairdocs.org/sdr/DALA2019041542419), Apr 12, 2019: SIGN. MISSING. MISSING EMERGENCY EXIT SIGN BTW EMERGENCY EXIT DOORS AT CABIN PAX. EXIT SIGNAL BTW EMERGENCY EXIT DOORS AT CABIN PAX WAS INSTALLED PER AMM 33-51-00.
- [SDR DALA2019040202074](https://openairdocs.org/sdr/DALA2019040202074), Apr 1, 2019: SPACER. CORRODED. CORROSION AT DOUBLER REPAIR SPACER OF THE MID CARGO. (CORROSION LEVEL 2): SPACER OF THE MID CARGO WAS REPLACED PER DC-9 / MD-80 SRM 53-05 FIG. 123. (LP1012114)
- [SDR DALA2019010800099](https://openairdocs.org/sdr/DALA2019010800099), Jan 8, 2019: BATTERY. DISCHARGED. ON SVC FOUND 1ST CLASS EMERGENCY CEILING LIGHTS INOP. REPLACED BATTERYS ON 1ST CLASS CEILING EMERGENCY LIGHTS PER AMM 33-53. OPS CHK GOOD. OK FOR SVC. (LP520567
- [SDR DALA2018031401680](https://openairdocs.org/sdr/DALA2018031401680), Mar 12, 2018: SKIN. DAMAGED. DURING CENTER TANK LOWER SKIN INSPECTION, FOUND DAMAGE ON TANK SKIN FROM HYDRAULIC LINE RIGHT SIDE. C/W ERA 566705-14.
- [SDR DALA2018013100519](https://openairdocs.org/sdr/DALA2018013100519), Jan 30, 2018: LANDING GEAR. MALFUNCTIONED. AFTER PUTTING DOWN LANDING GEAR, NOSE GEAR GREEN DOWN AND LOCKED DID NOT ILLUMINATE. PUSH TO TEST BULBS (GREEN) DID NOT ILLUMINATE BUT PEDESTAL INDICATOR WAS OU
- [SDR DALA2018010400060](https://openairdocs.org/sdr/DALA2018010400060), Jan 3, 2018: LIGHT. SHORTED. CALL SYSTEM CIRCUIT BREAKER POPPED, WILL NOT RESET. T/S PER WDM 33-21. FOUND DEBRIS SHORTING PSU AT ROW 28ABC. REMOVED DEBRIS. RESET C/B, SYSTEM OPS NRML.
- [SDR DALA2017031201967](https://openairdocs.org/sdr/DALA2017031201967), Mar 11, 2017: STRUCTURE. DAMAGED. OUT OF LIMITS DRAIN HOLE IN LOWER TEE AFT FLANGE BS 1338. REPAIRED IAW ER/A 555650-14, REV ORIGINAL & ETI-88-17-082, REV. 2.
- [SDR DALA2017031001926](https://openairdocs.org/sdr/DALA2017031001926), Mar 9, 2017: FRAME. CRACKED. AFT ACCESSORY BAY, CRACKED FRAME BS 1451, LONGERON 3L - 3R. REPAIRED IAW ETI-88-17-080, REVISION 4, AND ER/A 555642-14, REV ORIGINAL.
- [SDR DALA2017030801877](https://openairdocs.org/sdr/DALA2017030801877), Mar 7, 2017: ANGLE. CRACKED. CRACKED ANGLE ON FRAME BS 1463, LONGERON 18L. REPAIRED IAW ETI-88-17-081 REV. ORIGINAL, & ER/A 555643-14 REV. ORIGINAL.
- [SDR DALA2016120509609](https://openairdocs.org/sdr/DALA2016120509609), Dec 2, 2016: LAMP. INOPERATIVE. RIGHT WING EXTERIOR EMERGENCY LIGHT INOPERATIVE. REPLACED THE LAMP IAW AMM 33-51. OPS CHECKED GOOD.
- [SDR DALA2016112909403](https://openairdocs.org/sdr/DALA2016112909403), Nov 28, 2016: CONTROLLER. MALFUNCTIONED. CABIN PRESSURE AUTO INOPERATIVE, AUTO 1 INOPERATIVE, AUTO 2 INOPERATIVE, ALL ILLUMINATED COMPLIED WITH QRH. AN EMERGENCY WAS DECLARED. PERFORMED BITE OF AUTO PR
- [SDR DALA2016071405287](https://openairdocs.org/sdr/DALA2016071405287), Jul 13, 2016: INTERCOSTAL. CRACKED. INTERCOSTAL CRACKED AT TAIL CONE CABLE ATTACH. REPLACED CRACKED INTERCOSTAL IAW SRM 51-00.
- [SDR DALA2016051603938](https://openairdocs.org/sdr/DALA2016051603938), May 16, 2016: WIRE HARNESS. FAILED. EMERGENCY LIGHT AT 14DE INOPERATIVE. REPLACED HARNESS AT SEAT 14DE IW AMM 33-52.
- [SDR DALA2015021601359](https://openairdocs.org/sdr/DALA2015021601359), Feb 15, 2015: CUSP WEB. CORRODED. CRACKED LT CUSP WEB BS 1054 BETWEEN X 54-60. CUSP WEB REPAIRED IAW SRM 53-05, FIG 131A-6.
- [SDR DALA2015020400951](https://openairdocs.org/sdr/DALA2015020400951), Feb 3, 2015: LATCH. CORRODED. MAINTENANCE FOUND RUSTED LATCH PINS OF TAIL CONE SLIDE. MAINTENANCE REPLACED HARNESS ASSY IAW AMM 25-62-01-201.
- [SDR DALA2015020300875](https://openairdocs.org/sdr/DALA2015020300875), Feb 1, 2015: RIB. CORRODED. CORROSION ON RIB FWD AND AFT LOWER BORES STA XIS 186 AT SLAT PANEL NR 1 RT. DAMAGES ON LOWER BORES WERE REWORKED IAW ETI-88-14-35, REV 1 AND ER/A 531360-14 REV 
- [SDR DALA2015020200821](https://openairdocs.org/sdr/DALA2015020200821), Feb 1, 2015: CUSP WEB. CORRODED. CORROSION ON RT CUSP WEB BETWEEN X -44 AND -60 AND BS 865 - 905. THE CUSP WEB WAS REPLACED IAW SRM 53-057 AND 131A SHEET 1 AND DWG N 9910151, REV H AND 51-30-2,
- [SDR DALA2015020200820](https://openairdocs.org/sdr/DALA2015020200820), Feb 1, 2015: CARGO TRACK. CORRODED. CORROSION ON RT CARGO TRACK BS 1007 - 1155. CORROSION WAS REMOVED IAW SRM 51-10-3, PAR. 26. THE CARGO TRACK WAS REPLACED IAW SRM 51-30-2, DWG 5936660, REV BZ.
- [SDR DALA2015020200814](https://openairdocs.org/sdr/DALA2015020200814), Feb 1, 2015: ANGLE. CORRODED. CORROSION ON RT CUSP ANGLE BS 193 AND X=59 AT R1. REPAIRED IAW SRM 53-05, FIG 55 AND ELONGATED HOLES WITH ER/A 531375-14AD, REV ORIGINAL.
- [SDR DALA2016111008606](https://openairdocs.org/sdr/DALA2016111008606), Jan 31, 2015: BAR. CORRODED. CORROSION ON LOWER BAR AND LINK OF THE LT FLAP FLEX JOINT. THE LOWER BAR WAS REWORKED AND REPAIRED IAW ER/A.
- [SDR DALA2015020100808](https://openairdocs.org/sdr/DALA2015020100808), Jan 31, 2015: RETAINER. CRACKED. CRACKED PYLON T/E RT RETAINER. THE RETAINER WAS REPLACED IAW SRM 54-31-0, FIG 2B AND 51-30-1.
- [SDR DALA2015020300877](https://openairdocs.org/sdr/DALA2015020300877), Jan 30, 2015: SKIN. CRACKED. CRACKED REPAIR DOUBLER ON HORIZONTAL STABILIZER FAIRING 3705A. SKIN WAS TRIM OUT. FABRICATED DOUBLER AND FILLER IAW ER/A 464895-14 MA. PARTS REPAIR WERE INSTALL
- [SDR DALA2015020200859](https://openairdocs.org/sdr/DALA2015020200859), Jan 30, 2015: LONGERON. CORRODED. CORROSION ON REPAIR OF LONGERON 20L BS 995. REPAIRED IAW ER/A 531391-14 REV ORIG.
- [SDR DALA2015013100807](https://openairdocs.org/sdr/DALA2015013100807), Jan 30, 2015: BEAM. CORRODED. CORROSION ON AFT CARGO DOOR FRAME LOWER BEAM BS 1159-1210. BEAM REPLACED IAW DWG NR 5930483, REV.
- [SDR DALA2015013100806](https://openairdocs.org/sdr/DALA2015013100806), Jan 30, 2015: SPAR. CORRODED. CORROSION ON RT HORIZONTAL STABILIZER REAR SPAR HINGE HOLES NR 6. DAMAGE REPAIRED IAW ERA 531383-14, REV.
- [SDR DALA2015013100805](https://openairdocs.org/sdr/DALA2015013100805), Jan 30, 2015: SPAR CAP. DAMAGED. CUT OUT AND WEAR ON OTBD TIP OF RT HORIZONTAL STABILIZER REAR SPAR LOWER CAP. DAMAGE REPAIRED IAW ER/A 531383-14, REV ORIG.
- [SDR DALA2015013100804](https://openairdocs.org/sdr/DALA2015013100804), Jan 30, 2015: ANGLE. CRACKED. CRACKED ANGLE AT LOWER INTERCOSTAL ATTACH BS 825 X -45 AND Z=-9. . ANGLE WAS REPAIRED IAW SRM 53-01, FIG 2.
- [SDR DALA2015013000769](https://openairdocs.org/sdr/DALA2015013000769), Jan 29, 2015: CARGO TRACK. CORRODED. CORROSION ON LT CARGO TRACK BETWEEN BS 522-788 AND LONGERONS 27 - 28L. THE CARGO TRACK WAS REMOVED AND REPLACED IAW SRM 51-30-2.
- [SDR DALA2015013000763](https://openairdocs.org/sdr/DALA2015013000763), Jan 29, 2015: ANGLE. CRACKED. CRACKED ANGLE BETWEEN STA Y=1497 CANT AND Y=1485 LONGERON 23LT AT AFT ACCESORY COMPARTMENT. ANGLE WAS REMOVED IAW SRM 51-30-2 AND 51-30-5 AND DAMAGE WAS REMOVED
- [SDR DALA2015020300878](https://openairdocs.org/sdr/DALA2015020300878), Jan 28, 2015: FITTING. CORRODED. CORROSION ON RT MLG FITTING AT INBD LOWER HOLE FACE. REPAIRED IAW ER/A 531381-14, REV ORIGINAL.
- [SDR DALA2015012900762](https://openairdocs.org/sdr/DALA2015012900762), Jan 28, 2015: PAN. CRACKED. CRACKED PAN AT FWD CARGO DOOR BETWEEN BEAM 5 AND AFT EDGE. REPAIRED IAW ER/A 531392-14, REV ORIGINAL AND ETI-88-15-024, REV. 1.
- [SDR DALA2015012900760](https://openairdocs.org/sdr/DALA2015012900760), Jan 28, 2015: RETAINER. CRACKED. CRACKED PYLON T/E RT RETAINER. THE RETAINER WAS REPLACED IAW SRM 54-31-0, FIG 2B AND 51-31-1.
- [SDR DALA2015012800739](https://openairdocs.org/sdr/DALA2015012800739), Jan 27, 2015: CARGO TRACK. CORRODED. CORROSION WAS FOUND ON LT CARGO TRACK BS 1007 - 1218. THE CORROSION WAS REMOVED IAW SRM 51-10-3, PAR 26. THE CARGO TRACK WAS REMOVED AND REPLACED IAW SRM 51-30-
- [SDR DALA2015012800693](https://openairdocs.org/sdr/DALA2015012800693), Jan 27, 2015: DOUBLER. CRACKED. CRACK ON INTERNAL DOUBLER BS 1429-1431, APPROXIMATELY 10 INCHES FROM LT DORSAL ANGLE AT SETTLEMENT AREA OF ACCESS PLATE 6301A AT VERTICAL STABILIZER FIXED L/E. 
- [SDR DALA2015012800690](https://openairdocs.org/sdr/DALA2015012800690), Jan 27, 2015: LONGERON. CRACKED. CRACKED LONGERON 4R BS 693. LONGERON WAS REPAIR IAW ER/A NR 531369-14.
- [SDR DALA2015012800689](https://openairdocs.org/sdr/DALA2015012800689), Jan 27, 2015: SKIN. CRACKED. CRACK ON VERTICAL STABILIZER L/E RT SIDE BS 1401 BESIDE TO DORSAL ANGLE. CRACK WAS STOP DRILLED, DOUBLER WAS FABRICATED, TREATED AND PAINTED, AND INSTALLED IAW 
- [SDR DALA2015012800676](https://openairdocs.org/sdr/DALA2015012800676), Jan 27, 2015: SKIN. DAMAGED. DAMAGE COAT PAINT AND FLAME SPRAY ON RUDDER. RUDDER WAS REPAIRED IAW 51-70-1AD, PAR 23.
- [SDR DALA2015012800674](https://openairdocs.org/sdr/DALA2015012800674), Jan 27, 2015: CARGO TRACK. CORRODED. CORROSION ON RT CARGO TRACK BS 1007 - 1155. CORROSION REMOVED IAW SRM 51-10-3, PAR. 26. THE CARGO TRACK IAW SRM 51-30-2 DWG 5936660 REV BZ.
- [SDR DALA2015012800671](https://openairdocs.org/sdr/DALA2015012800671), Jan 27, 2015: FINGER DOUBLER. CRACKED. CRACKS ON FINGER DOUBLER FROM BS 1180 - 1213 BETWEEN LONGERONS 25 - 26L. FINGER DOUBLER WAS REPAIRED IAW SRM 53-04, FIG 12E.
- [SDR DALA2015012800670](https://openairdocs.org/sdr/DALA2015012800670), Jan 27, 2015: VANE. PUNCTURED. PUNCTURE ON LT WING OTBD FLAP MID GUIDE VANE L/E. REPAIRED IAW SRM 57-03D, PAR 11 AND OPEN 1031.
- [SDR DALA2015012800669](https://openairdocs.org/sdr/DALA2015012800669), Jan 27, 2015: SKIN. CORRODED. CORROSION ON EXTERNAL FUSELAGE SKIN BS 807 BETWEEN LONGERONS 29-30L. CORROSION REMOVED IAW SRM AND DWG 5936046 AND SRM 53-04, PAR 57.
- [SDR DALA2015012800668](https://openairdocs.org/sdr/DALA2015012800668), Jan 27, 2015: FRAME. CRACKED. CRACKS ON FRAME BS 1510. FRAME REPLACED IAW DWG 9911843, ITEMS 3 & 5, REV AC SRM 51-10-4 AND SRM 51-30-2.
- [SDR DALA2015012800695](https://openairdocs.org/sdr/DALA2015012800695), Jan 26, 2015: SEAT TRACK. CORRODED. CORROSION ON SEAT TRACK BETWEEN BS 721 - 1031 AT X -54. THE SEAT TRACK REPLACED IAW SRM 53-05, FIG 4F.
- [SDR DALA2015012700667](https://openairdocs.org/sdr/DALA2015012700667), Jan 26, 2015: CUSP WEB. CORRODED. CORROSION ON RT CUSP WEB BETWEEN X=-44 AND X=-60 AND BETWEEN Y= 865 TO 905. CUSP WEB WAS REPLACED IAW SRM 53-057 AND 131A SHEET 1 AND DWG N. 9910151.
- [SDR DALA2015012700628](https://openairdocs.org/sdr/DALA2015012700628), Jan 26, 2015: LONGERON. CRACKED. CRACKED LONGERON 2RT STA Y=1418 AT AFT ACCESSORY COMPARTMENT. LONGERON 2RT WAS REPAIR IAW SRM 53-02, FIG 18 AND WAS INSTALLED IAW ER/A 531352-14AD, REV ORIG.

All 204: https://openairdocs.org/aircraft/N979DL/unmatched-reports.md

## STCs that may be installed (OpenAirDocs)

None matched to this aircraft's models.

## Related

- Other Thiessen Duane D CH 750 STOL aircraft: https://openairdocs.org/model/thiessen-duane-d-ch-750-stol/aircraft.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.