# N526UP: 2012 Albert F Padelt PHY-37 - Status: Valid registration - Airframe: [Albert F Padelt PHY-37](https://openairdocs.org/model/albert-f-padelt-phy-37) (registry code 05631UR, 2 seats) - Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000) - Serial number: H003 - Year built: 2012 - Type: Balloon - Engine type: None - Airworthiness: Experimental, amateur built - Airworthiness date: June 9, 2012 - Certificate issued: February 14, 2018 - Expires: February 29, 2028 - Mode S code: A6A108 - Registered owner: [Cowlishaw Brenda L](https://openairdocs.org/faa-owner/COWLISHAW%20BRENDA%20L) - Location: [Bulverde, TX](https://openairdocs.org/faa-place/TX/Bulverde) - Owner type: Individual - Owner's area on the map: 29.7657° N, 98.4358° W: Placed by OpenAirDocs at the center of ZIP code 78163, within about 5 miles (OpenAirDocs). The owner's mailing address, not where the aircraft is based - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=526UP - Page: https://openairdocs.org/aircraft/N526UP 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 (Albert F Padelt PHY-37) None in force. ### Matched by engine (NONE) None in force. ## Information bulletins (advisory) None matched. ## NTSB investigations None matched to N526UP. ## FAA accident and incident reports None matched to N526UP. ## 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 N526UP not matched to an aircraft (132, newest 50) They name N526UP, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft. - [SDR WRNA200800002](https://openairdocs.org/sdr/WRNA200800002), Dec 24, 2007: FRAME. CRACKED. DURING B-CHECK INSPECTION, RIGHT FRAME AT STATION 2674.85 WAS FOUND CRACKED AT WL 325. REMOVED DAMAGE SECTION OF FRAME, FABRICATED AND INSTALLED REPAIR DOUBLERS - [SDR WRNA200800001](https://openairdocs.org/sdr/WRNA200800001), Dec 23, 2007: BULKHEAD. CHAFED. DURING B-CHECK WHILE ACCOMPLISHING AD 2007-19-19, NR 1 PYLON STRUT FORWARD ENGINE MOUNT BULKHEAD CORD WAS FOUND WITH CHAFED RADIUS AT LOWER INBOARD END. FABRICA - [SDR WRNA200700063](https://openairdocs.org/sdr/WRNA200700063), Dec 20, 2007: SENSOR. NO TEST. DURING TAKEOFF, AT 80 KNOTS, CREW RECEIVED A STALL WARNING, TAKEOFF WAS ABORTED. AOA FAILED TEST IAW B747 MM 27-32-00 PG 507. REPLACED AOA SENSOR IAW 747 MM 27- - [SDR WRNA200700045](https://openairdocs.org/sdr/WRNA200700045), Jul 20, 2007: TRANSMITTER. MALFUNCTIONED. ON APPROACH TO ANC, OUTBOARD TRAILING EDGE FLAP HAD AN ASYMMETRICAL TRIP AND NR 2 LT LEADING EDGE FLAP DID NOT EXTEND. CONTINUED APPROACH AND MADE A SAFE LANDIN - [SDR WRNA200700044](https://openairdocs.org/sdr/WRNA200700044), Jul 5, 2007: UNKNOWN. SPARKS. ON TAXI OUT, DURING FLIGHT CONTROL CHECK, CREW IN AIRCRAFT FOLLOWING BEHIND REPORTED SPARKS COMING FROM RT AILERONS, RETURNED TO BLOCKS. RAN NR 3 AND NR 4 ENGIN - [SDR WRNA200700043](https://openairdocs.org/sdr/WRNA200700043), Jun 19, 2007: SKIN. DAMAGED. DURING -B- CHECK, OUT OF LIMIT LIGHTNING STRIKE DAMAGE WAS FOUND BETWEEN BS 765 & 775 AT LBL 4.5. DRILLED OUT DAMAGE IAW SRM 53-30-03 FIG 3A AND INSTALLED RIVET - [SDR WRNA200700022](https://openairdocs.org/sdr/WRNA200700022), Apr 17, 2007: CONNECTOR. DIRTY. TAKEOFF WARNING HORN CAME ON AT BRAKE RELEASE. TROUBLESHOOT PER FIM 31-26-00 PG 109, FOUND TAKEOFF WARNING CIRCUITS OPERABLE. DURING TROUBLESHOOTING, FOUND PARK - [SDR WRNA200700015](https://openairdocs.org/sdr/WRNA200700015), Mar 10, 2007: SKIN. GOUGED. DURING C-CHECK, 2 GOUGES IN SKIN WERE FOUND OUT OF LIMITS AT FUSELAGE STA 560 BETWEEN STR 37R AND STR 38R. BLENDED OUT DAMAGE AREA OF OUTER SKIN IAW EA 01-07013 - [SDR WRNA200700037](https://openairdocs.org/sdr/WRNA200700037), Feb 25, 2007: SKIN. GOUGED. DURING C-CHECK, FOUND EXTERNAL FUSELAGE SKIN GOUGED AT STA 2576 BETWEEN STR 42R AND 46R. REMOVED DAMAGED SECTION, FABRICATED AND INSTALLED REPAIR IAW SRM 53-30- - [SDR WRNA200700039](https://openairdocs.org/sdr/WRNA200700039), Feb 15, 2007: DOOR FRAME. CRACKED. DURING C-CHECK, A CRACK WAS FOUND ON WEB AND DOUBLER ON R-1 DOOR EDGE FRAME AT STA 488 BETWEEN STR 25 AND 26 USING HFEC. REMOVED DOUBLER AND DAMAGED SECTION OF - [SDR WRNA200700010](https://openairdocs.org/sdr/WRNA200700010), Feb 15, 2007: BALL SCREW. FAILED. DURING C-CHECK, HORIZONTAL STABILIZER BALL SCREW AND BALL NUT FAILED FREE PLAY CHECK. REMOVED STABILIZER DRIVE MECHANISM, CHECKED WEAR OF PINS AND FITTINGS, FOU - [SDR WRNA200700034](https://openairdocs.org/sdr/WRNA200700034), Feb 14, 2007: RIB. CRACKED. DURING C-CHECK, THE LOWER RIB CORD OF NR 4 FUEL TANK ACCESS PANEL 652AB, WS 972 WAS FOUND CRACKED FROM RADIUS BLOCK TO RADIUS BLOCK. REMOVED LOWER RIB CORD IAW - [SDR WRNA200700007](https://openairdocs.org/sdr/WRNA200700007), Feb 14, 2007: MOUNT. CRACKED. DURING C-CHECK, WHILE ACCOMPLISHING ULTRASONIC INSPECTION OF NR 4 STRUT REAR ENGINE MOUNT THRUST LINKIAW 747 MM 71-21-03, THE FORWARD BORE HAD A CRACK INDICATIO - [SDR WRNA200700033](https://openairdocs.org/sdr/WRNA200700033), Feb 13, 2007: SKIN. DAMAGED. DURING C-CHECK, THE O/B SKIN OF NR 3 PYLON WAS FOUND DAMAGED AT APPROX STA 221.9 JUST BELOW MID SPAN. REMOVED DAMAGE IAW SRM 54034-03, FABRICATED AND INSTALLED - [SDR WRNA200700032](https://openairdocs.org/sdr/WRNA200700032), Feb 13, 2007: BULKHEAD. DENTED. DURING C-CHECK, A SMALL DENT WAS FOUND IN THE AFT PRESSURE BULKHEAD AT STA 2360 APPROX WL 200, LBL 30. REMOVED DAMAGED SECTION OF BULKHEAD WEB, FABRICATED AND I - [SDR WRNA200700017](https://openairdocs.org/sdr/WRNA200700017), Feb 13, 2007: SKIN. DAMAGED. DURING C-CHECK, NR 3 PYLON INBOARD SKIN DOUBLER WAS FOUND WORN UNDER FORESHIELD NEAR NAC STA 221. FABRICATED AND INSTALLED REPAIR PARTS IAW EA 01-07019. - [SDR WRNA200700011](https://openairdocs.org/sdr/WRNA200700011), Feb 12, 2007: ATTACH ANGLE. CRACKED. DURING C-CHECK, FOUND FLOOR ATTACH ANGLE FOR L-1 DOOR FRAME CRACKED, STA 441. REPLACED ANGLE PER 747 SRM 51-30-02 - [SDR WRNA200700009](https://openairdocs.org/sdr/WRNA200700009), Feb 12, 2007: SHEAR WEB. CRACKED. DURING C-CHECK, FOUND A 1 INCH CRACK IN SHEAR WEB BETWEEN S-10A AND S10 LEFT SIDE BS 820, WL 330, LBL 80. REPLACED SHEAR WEB IAW B747 SRM 51-30-02 AND DRAWING 6 - [SDR WRNA200700008](https://openairdocs.org/sdr/WRNA200700008), Feb 12, 2007: SHEAR WEB. CRACKED. DURING C-CHECK, FOUND A 1 INCH CRACK IN SHEAR WEB, BETWEEN S-10A AND S-10 RIGHT SIDE BS 820, WL 332, RBL 80. REPLACED SHEAR WEB IAW B747 SRM 51-30-02 AND DRAWIN - [SDR WNRA200700038](https://openairdocs.org/sdr/WNRA200700038), Feb 11, 2007: ANGLE. DAMAGED. DURING C-CHECK, HFEC INSPECTION, NR 1 PYLON BULKHEAD, STA 221 FORWARD SIDE, INBOARD ANGLE MISSING PIECE AT UPPER HORIZONTAL FLANGE. FABRICATED AND INSTALLED DOU - [SDR WRNA200700036](https://openairdocs.org/sdr/WRNA200700036), Feb 10, 2007: SKIN. DENTED. DURING C-CHECK, FUSELAGE SKIN WAS FOUND DENTED AT STA 228 STR 17L. CUT OUT DAMAGE IAW SRM 53-30-03 FIG 1, FABRICATED REPAIR IAW SRM 53-30-03 FIG 1 AND INSTALLED - [SDR WRNA200700035](https://openairdocs.org/sdr/WRNA200700035), Feb 10, 2007: SKIN. DENTED. DURING C-CHECK, FOUND 3 DENTS IN FUSELAGE SKIN AT STA 265 BETWEEN STR 10A L AND 11L. REMOVED DAMAGED, FABRICATED AND INSTALLED REPAIR PARTS IAW SRM 53-30-03 FIG - [SDR WRNA200700030](https://openairdocs.org/sdr/WRNA200700030), Feb 10, 2007: SKIN. GOUGED. DURING C-CHECK, FUSELAGE SKIN WAS FOUND GOUGED AT STA 665 BETWEEN STR 40R AND 41R. REMOVED GOUGE IAW SRM 53-30-01 DETAIL II AND INSTALLED REPAIR DOUBLE IAW SRM - [SDR WRNA200700019](https://openairdocs.org/sdr/WRNA200700019), Feb 10, 2007: SKIN. BULGED. DURING C-CHECK, FUSELAGE SKIN WAS FOUND BULGED AT STA 2348 AT STRINGER 51R. REPAIRED STRINGER, FAILSAFE STRAP, SHEAR TIE, FRAME WEB AND FRAME IAW SRM, 53-10-02, - [SDR WRNA200700018](https://openairdocs.org/sdr/WRNA200700018), Feb 10, 2007: SKIN. DAMAGED. DURING C-CHECK, EXTERNAL FUSELAGE SKIN WAS FOUND CREASED FROM STA 1770 TO STA 1850 & 41L TO 46L. REPLACED SKIN SECTION IAW SRM 53-30-03 FIG 19 AND EA 01-07014. - [SDR WRNA200700016](https://openairdocs.org/sdr/WRNA200700016), Feb 10, 2007: FUEL TANK. CORRODED. DURING C-CHECK, CORROSION WAS FOUND AT LOWER CENTER TANK SKIN AT STA 1265 LBL 117. REPAIRED IAW SRM 57-30-01 AND EA 01-07018. - [SDR WRNA200700002](https://openairdocs.org/sdr/WRNA200700002), Feb 10, 2007: SEAT TRACK. CRACKED. DURING 'C' CHECK, CAPTAINS AFT INBD SEAT TRACK WAS FOUND CRACKED, CRACKED VERIFIED WITH HFEC. REPLACED CAPTAINS AFT INBD SEAT TRACK IAW 747 MM 20-51-1. - [SDR WRNA200700001](https://openairdocs.org/sdr/WRNA200700001), Feb 10, 2007: SEAT TRACK. CRACKED. DURING C-CHECK, FIRST OFFICERS AFT INBOARD SEAT TRACK WAS FOUND CRACKED, VERIFIED WITH HFEC. REPLACED SEAT TRACK IAW B747 MM 20-51-1 - [SDR WRNA200700004](https://openairdocs.org/sdr/WRNA200700004), Feb 9, 2007: ATTACH FITTING. BROKEN. DURING C-CHECK, FOUND NR 5 SPOILER CENTER ATTACH FITTING BROKEN AFT OF WS 680 IN FLAP WELL. - [SDR WRNA200700003](https://openairdocs.org/sdr/WRNA200700003), Jan 13, 2007: STRINGER CLIP. CRACKED. DURING C-CHECK, FOUND FUSELAGE STRINGER CLIP CRACKED AT STA 1540, STR 23R. - [SDR WRNA200700031](https://openairdocs.org/sdr/WRNA200700031), Jan 10, 2007: SKIN. DENTED. DURING C-CHECK, A DENT WAS FOUND IN BULK CARGO DOOR EXTERNAL SKIN AT STA 2012 BETWEEN STR 31R AND 33R. CUT OUT DAMAGED AREA IAW SRM 52-00-03 FIG 1. FABRICATED A - [SDR WRNA200700005](https://openairdocs.org/sdr/WRNA200700005), Jan 4, 2007: STRUCTURE. WORN. DURING B-CHECK, FOUND NR 4 PYLON BULKHEAD STA 221.9 WORN FROM CONTACT WITH HYDRAULIC LINE AT INSIDE TOP AFT PIGEON HOLE. REPAIRED IAW BOEING 747 SRM 54-14-03 FI - [SDR WRNA200700006](https://openairdocs.org/sdr/WRNA200700006), Jan 3, 2007: FRAME. CRACKED. DURING B-CHECK, FOUND NR 1 PYLON FRAME STA 250 CRACKED AT INSIDE BOTTOM AFT PIGEON HOLE. REPAIRED IAW BOEING 747 SRM 54-14-03 FIG 1. - [SDR WRNA200600035](https://openairdocs.org/sdr/WRNA200600035), Oct 14, 2006: ENGINE. UNSERVICEABLE. DURING CLIMB-OUT OF MIA AT APPROX 18,000 FEET, THERE WAS A LOUD BANG FROM NR 3 ENGINE WITH A SPIKE IN EGT TO 780C AND FLUCTUATING EPR. ENGINE WAS SHUT DOWN, 19, - [SDR UPS05445322](https://openairdocs.org/sdr/UPS05445322), Aug 26, 2005: STRINGER CLIP. CRACKED. BULK CARGO BS 2060 STR 28L FOUND 1EA TIE CLIP CRACKED, CRACK LENGTH 3/8". TIE CLIP REPLACED AS PER SRM 51-10-01 PG 9. - [SDR UPS05445379](https://openairdocs.org/sdr/UPS05445379), Aug 25, 2005: BULKHEAD. CORRODED. INSPECTION TYPE:C L/G - RBLG W/W STA 1480 BULKHEAD FWD FACE FOUND SURFACE CORROSION AROUND L/G RETRACT ACTUATOR UPPER MOUNT AREA. BS 1480 BULKHEAD CORRODED. TIM - [SDR UPS05445290](https://openairdocs.org/sdr/UPS05445290), Aug 25, 2005: FRAME. CORRODED. FX FRONT BODY FAIRING SUPPORT UPPER SURFACE FOUND SURFACE CORROSION AT STA 880 RBL 0 TO RBL 1". CORROSION BLEND OUT 0.080" BY 1" BY 1" EXCEED SRM 53-50-01 FIG 5 - [SDR UPS05445272](https://openairdocs.org/sdr/UPS05445272), Aug 25, 2005: FITTING. CORRODED. LT WING UPPER REAR SPAR SIDE OF BODY SPLICE NR 6 FASTENER HOLE FOUND CORROSION AT UPPER SPLICE FITTING APPROX 0.030" IN LENGTH RUNNING FORWARD O/B, CORROSION BL - [SDR UPS05445271](https://openairdocs.org/sdr/UPS05445271), Aug 25, 2005: FITTING. CRACKED. BS 1241 REAR SPAR CRACK INDICATION REVEALED AT UPPER SPLICE FITTING LOWER SURFACE AT NR 6 HOLE. CRACK LENGTH 0.060". RT NR 6 BOLT HOLE BUSHING REPAIRED AS PER E - [SDR UPS05445270](https://openairdocs.org/sdr/UPS05445270), Aug 25, 2005: FITTING. CRACKED. RT BS 1241 WING UPPER REAR SPAR SIDE-OF-BODY KICK FITTING AREA FOUND HOLE NR 2 CRACKED AT KICK FITTING APPROX 0.060". RH NR 2 BOLT HOLE BUSHING REPAIRED AS PER - [SDR UPS05445311](https://openairdocs.org/sdr/UPS05445311), Aug 24, 2005: SKIN. DENTED. INSPECTION TYPE:C FX LT LOWER FUSELAGE EXTERNAL SKIN SURFACE SUSPECT DENT MARK AT STA 1980 TO STA 2000 STR 43L TO STR 44L. FX BS 1986 TO BS 1998.5 BETWEEN STR 4 - [SDR UPS05445355](https://openairdocs.org/sdr/UPS05445355), Aug 23, 2005: STIFFENER. CRACKED. LT KEEL BEAM VERTICAL WEB SURFACE EXTERNAL ATT STIFFENER FOUND CRACKED AT STA 1460 LBL 9, CRACK LENGTH .625. STIFFENER REPLACED AS PER SRM 51-10-01 PG 9. - [SDR UPS05445390](https://openairdocs.org/sdr/UPS05445390), Aug 21, 2005: BEAR STRAP. CORRODED. INSPECTION TYPE:C FX LOWER FUSELAGE EXTERNAL SKIN SURFACE FWD LAVATORY SERVICE PAN FWD ATT PLATE FOUND CORRODED AT LT STA 545 STR 46L TO STR 47L. CORROSION BLEN - [SDR UPS05445208](https://openairdocs.org/sdr/UPS05445208), Aug 16, 2005: SKIN. DENTED. INSPECTION TYPE:N/A SEVERAL DENTS IN CREW EMERGENCY ESCAPE HATCH OUTER SKIN S/M. DOOR REMOVED FOR REPAIR S/M SHOP. FABRICATED NEW SKIN IAW 52-20-01 OK TO INSTAL - [SDR UPS05444693](https://openairdocs.org/sdr/UPS05444693), Jun 1, 2005: CONNECTOR. DIRTY. NR 4 ENG A- LOOP DISPLAYED INTERMITTENT FAULT LIGHTS AND BELL TEMPERATURE WAS IN RED BANK BUT FLUCTUATED SOMEWHAT. PERFORMED PRECAUTIONARY ENGINE SHUT DOWN PROC - [SDR UPS05443841](https://openairdocs.org/sdr/UPS05443841), Jan 31, 2005: BATTERY. INOPERATIVE. EMERGENCY FLASHLIGHT INOP. REMOVED AND REPLACED EMERGENCY FLASHLIGHT BATTERY, OPS CK GOOD AT THIS TIME. - [SDR UPS04442925](https://openairdocs.org/sdr/UPS04442925), Aug 16, 2004: SKIN. DAMAGED. LOWER FWD CARGO DOOR HAS DAMAGE TO SKIN ON LOWER AFT CORNER OF DOOR. INSTALLED TEMPORARY REPAIR DOUBLER. REPAIR HAS A ONE YEAR LIMIT. FWD ITEM TO DMI LOG D28621 - [SDR UPS04442897](https://openairdocs.org/sdr/UPS04442897), Aug 12, 2004: BATTERY PACK. INOPERATIVE. EMERGENCY LIGHT INOPERATIVE UPPER DECK R-1 DOOR REPLACE BATTERY PACK IAW MM 33-51-00. - [SDR UPS04442362](https://openairdocs.org/sdr/UPS04442362), May 7, 2004: LIGHT. INOPERATIVE. UPPER DECK SERVICE DOOR FRAME EMERGENCY LIGHTS 2EA INOP. PANEL OPENED FOR ACCESS TO BATTERY PACK. APPLIED POWER TO A/C & ALLOWED EMERGENCY LIGHTS TO CHARGE SEVE - [SDR UPS04442208](https://openairdocs.org/sdr/UPS04442208), Apr 18, 2004: LIGHT. MALFUNCTIONED. EMERGENCY EXIT LIGHT AT POS 500 ON MCD HAS ONE LAMP INOP. REPLACED LAMP, OPS CHECKS OK. All 132: https://openairdocs.org/aircraft/N526UP/unmatched-reports.md ## STCs that may be installed (OpenAirDocs) None matched to this aircraft's models. ## Related - Other Albert F Padelt PHY-37 aircraft: https://openairdocs.org/model/albert-f-padelt-phy-37/aircraft.md - The NONE engine: https://openairdocs.org/engine/none.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.