# N521NA: Zipline International P2 ZIP - Status: Valid registration - Airframe: [Zipline International P2 ZIP](https://openairdocs.org/model/zipline-international-p2-zip) (registry code 06102II) - Serial number: 18735P2872 - Type: Hybrid lift - Engine type: Electric - Certificate issued: November 24, 2025 - Expires: November 30, 2032 - Mode S code: A68DD2 - Registered owner: [Zipline International Inc](https://openairdocs.org/faa-owner/ZIPLINE%20INTERNATIONAL%20INC) - Location: [S San Fran, CA](https://openairdocs.org/faa-place/CA/S%20San%20Fran) - Owner type: Corporation - Owner's area on the map: 37.6552° N, 122.4184° W: Placed by OpenAirDocs at the center of ZIP code 94080, 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=521NA - Page: https://openairdocs.org/aircraft/N521NA 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 (Zipline International P2 ZIP) None in force. ## Information bulletins (advisory) None matched. ## NTSB investigations None matched to N521NA. ## FAA accident and incident reports None matched to N521NA. ## 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 N521NA not matched to an aircraft (27) They name N521NA, but no registry record covers the date, the aircraft registered then was built later, or the report describes another aircraft. - [SDR ANC2008F00000](https://openairdocs.org/sdr/ANC2008F00000), Jul 12, 2008: UNKNOWN. UNKNOWN. PILOT REPORT 4274013-1: DURING SINGLE ENG TAXI WHILE APPLYING THRUST RT ENGINE STALLED THEN AFTER THE LT ENG WAS STARTED, IT ALSO STALLED LT ENG LIMITER COME ON - [SDR ANCF200800009](https://openairdocs.org/sdr/ANCF200800009), May 5, 2008: CABLE. OVERHEATED. WINDOW HEAT CABLES OF L SIDE WINDOW OVERHEATED PRODUCING FUMES L SIDE WINDOW HEAT SW WAS TURNED OFF. DEFERRED TO DMI LOG BOOK ITEM NR 307 WAS INSPECTED L SIDE W - [SDR ANCF200700029](https://openairdocs.org/sdr/ANCF200700029), Nov 14, 2007: BLADES. DAMAGED. N1 ENGINE VIBRATION HIGH, READS 3.0. ENGINE INDICATIONS NORMAL. VIBRATION RETUNED BELOW 2.5 WITH THRUST LEVER RETARDED. ENGINE WAS NOT SHUTDOWN. ON THE LT ENGIN - [SDR ANCF200700028](https://openairdocs.org/sdr/ANCF200700028), Oct 29, 2007: FILTER. CRACKED. PILOT REPORT: AIRPLANE RETURN TO RAMP DUE TO TECHNICAL PROBLEMS ( HYD SYS QTY). DURING INSPECTION FOUND THE POWER TRANSFER UNIT PRESSURE FILTER MODULE WITH LEAK - [SDR ANCF200700026](https://openairdocs.org/sdr/ANCF200700026), Oct 25, 2007: UNKNOWN. UNKNOWN. BOG 13L. DURING ROLLING TAKEOFF, THE NOSE WHEEL STEERING GOT STUCK AND THEN THE TAKEOFF WAS REJECTED, THE AIRPLANE WENT TO THE RT, OUT OFF THE RUNWAY WITHOUT CO - [SDR ANCF200700025](https://openairdocs.org/sdr/ANCF200700025), Oct 19, 2007: CONTROL PANEL. MALFUNCTIONED. A/T FAILED TO ENGAGE WHEN EPR MODE SELECTED ON T/O THE EPR SW DID NOT ENGAGE. THE T/O WAS DISCONNECTED, IAW MCC THE PROCEDURE FOR T/O WILL PERFORM MANUALLY A SE - [SDR ANCF200700014](https://openairdocs.org/sdr/ANCF200700014), Jun 11, 2007: TUBE. MALFUNCTIONED. DURING CRUISE AT FL 370 A DIFFERENCE BETWEEN BOTH ENGINE FUEL FLOWS WAS DETECTED WHILE THE OTHER ENGINE PARAMETERS WERE NORMAL LITTLE BY LITTLE THE FF DIFFERENC - [SDR P9RA20050085](https://openairdocs.org/sdr/P9RA20050085), May 28, 2005: BULB. INOPERATIVE. JFK - R2 AND R4 DOOR SLIDES WILL NOT INDICATE ARMED. RELAMPED SLIDE ARM INDICATORS IAW M/M. - [SDR P9RA20040054](https://openairdocs.org/sdr/P9RA20040054), Dec 11, 2004: BULB. INOPERATIVE. IN MAINTENANCE LAS, SLIDE ARM LIGHTS AT R2 AND R3 DOORS INOPERATIVE. RELAMPED EMERGENCY SLIDE ARM LIGHTS IAW MM. - [SDR P9RA20040039](https://openairdocs.org/sdr/P9RA20040039), Sep 12, 2004: PRESSURE VALVE. FAULTY. RIGHT ENGINE HIGH STAGE BLEED MESSAGE ON EICAS AT 70 KNOTS. ABORTED TAKEOFF AND RETURNED TO GATE. REMOVED AND REPLACED RIGHT HIGH STAGE VALVE IAW MM. - [SDR P9RA20040033](https://openairdocs.org/sdr/P9RA20040033), Aug 28, 2004: ENGINE. MALFUNCTIONED. AT FLIGHT LEVEL 360, POS-JFK, RIGHT ENGINE DECREASED TO PARTIAL THRUST WITH EPR INDICATING NORMAL CRUISE POWER, 1.6EPR. ALL OTHER INDICATIONS SHOWED PARTIAL THR - [SDR P9RA20040027](https://openairdocs.org/sdr/P9RA20040027), Aug 7, 2004: PROXIMITY SENSOR. OUT OF ADJUST. 1L DOOR "ARMED" LIGHT NOT ON WITH DOOR IN ARMED POSITION. CLEANED AND ADJUSTED PROXIMITY SWITCHS FOR 1L DOOR SLIDE LIGHT IAW MM 256611. INDICATION WORKING NORMA - [SDR P9RA20040021](https://openairdocs.org/sdr/P9RA20040021), Jul 18, 2004: SLIDE. DEPLOYED. AIRCRAFT IN MAINTENANCE. L1 DOOR SLIDE INADVERTENTLY DEPLOYED BY MAINTENANCE. REMOVED AND REPLACED L1 DOOR SLIDE IAW AMM 256601 - [SDR P9RA20040011](https://openairdocs.org/sdr/P9RA20040011), Apr 17, 2004: SLIDE. DEPLOYED. AIRCRAFT OVERNIGHT IN JFK. MAINTENANCE DISCOVERED R4 SLIDE DEPLOYED. EXACT CAUSE NOT KNOWN. SUSPECT OVERNIGHT CLEANING/CATERING CREW. REMOVED AND REPLACED SLIDE - [SDR P9RA20040009](https://openairdocs.org/sdr/P9RA20040009), Mar 6, 2004: SLIDE. DISLODGED. PILOT REPORT; AT GATE IN PHL, L1 DOOR SLIDE FELL OUT OF ITS CASING. REINSTALLED L1 DOOR SLIDE PER MM 256601. - [SDR 2004F00342](https://openairdocs.org/sdr/2004F00342), Dec 30, 2003: GOVERNOR. FAILED. AT FLIGHT LEVEL 350, JFK-POS - RIGHT ENGINE ROLLED BACK. ALL PARAMETERS EXCEPT EPR, WHICH WENT HIGH AND EVENTUALLY DISAPPEARED. PRESSURE TESTED P1 PROBE LINES, - [SDR 2004F00331](https://openairdocs.org/sdr/2004F00331), Dec 20, 2003: WIRE. WORN. FOUND EMERGENCY LIGHTS ON AT R2 AND L2 DOORS, ONLY DURING TURBULENCE. OVER L2 DOOR, FOUND TWO WIRES INSULATION WORN AWAY MAKING CONTACT. REPAIRED WIRING IAW SWP - [SDR 2004F00329](https://openairdocs.org/sdr/2004F00329), Dec 15, 2003: WIRE. BROKEN. EMERGENCY EGRESS LIGHTS OVERHEAD OF ROWS 10, 12 AND 14 ILLUMINATE INTERMITTENTLY WITH THE COCKPIT SWITCH IN THE ARMED OR OFF POSITION. REPAIRED BROKEN WIRE TERM - [SDR 2003F00656](https://openairdocs.org/sdr/2003F00656), Dec 8, 2003: TRANSMITTER. FAILED. NR 2 ENGINE ROLL BACK AT CRUISE ALTITUDE, ENROUTE. AIRCRAFT DIVERTED AND LANDED UNEVENTFULLY. PLACED NR 2 ENGINE EEC ON MEL 4013. CONTINUED ON, TROUBLESHOT SYST - [SDR 2003F00654](https://openairdocs.org/sdr/2003F00654), Dec 1, 2003: LIFTER. BROKEN. 12 DOOR GIRT BAR DOES NOT DISENGAGE WHEN EMERGENCY SLIDE DOOR LEVER IS MOVED TO DISARM POSITION. FOUND FORWARD GIRT BAR LIFTER BROKEN. REMOVED AND REPLACE LIFTE - [SDR 02081203](https://openairdocs.org/sdr/02081203), Aug 12, 2002: LANYARD. DISPLACED. Left Entry Door light came on in flight. Visual inspection showed door not fully closed. Interior handle would pop out of closed detent repeatedly.Found L2 Door - [SDR 02081204](https://openairdocs.org/sdr/02081204), Aug 12, 2002: PUSHROD. Left Center Door EICAS Message/Light appeared in flight. Handle popped up, out of locked position.Adjusted cocking pushrod in accordance with M/M 52-11-00 and 5 - [SDR 02021501](https://openairdocs.org/sdr/02021501), Feb 14, 2002: WARNING SYSTEM. ACTIVATED. UPON FLAP RETRACTION LEADING EDGE LIGHT AND SLAT DISAGREE MESSAGE ILLUMINATE. LIGHT REMAINED ON DURING ACCOMPLISHMENT OF ABNORMAL CHECK LIST. TROUBLESHOOTING SY - [SDR 02021101](https://openairdocs.org/sdr/02021101), Feb 14, 2002: WARNING SYSTEM. ACTIVATED. UPON FLAP RETRACTION LEADING EDGE LIGHT AND SLAT DISAGREE MESSAGE ILLUMINATE. LIGHT REMAINED ON DURING ACCOMPLISHMENT OF ABNORMAL CHECK LIST. TROUBLESHOOTING SY - [SDR 2002F00233](https://openairdocs.org/sdr/2002F00233), Jan 2, 2002: SPRING. FAILED. LE SLAT DISAGREE EICAS MESSAGE BETWEEN FLAPS 1 AND 0 ON RETRACTION. AIRCRAFT RETURNED TO DEPARTURE STATION. SLATS FOUND TO BE BINDING, LUBED AND OPERATIONAL CHE - [SDR 2001F00051](https://openairdocs.org/sdr/2001F00051), Jun 8, 2001: BATTERY PACK. DISCHARGED. FOUND EMERGENCY LIGHTS AT ROWS 27 AND 29 INOPERATIVE. DURING TROUBLESHOOTING FOUND BATTERY PACK AT DOOR R3 WITH LOW VOLTAGE. REPLACED BATTERY PACKS AT AFT GALLE - [SDR 20010112SG039](https://openairdocs.org/sdr/20010112SG039), Nov 11, 2000: EEC. MALFUNCTIONED. DURING TAKEOFF, NR 1 ENGINE WOULD NOT MAKE TAKEOFF POWER, ABORTED TAKEOFF AT 122 KTS. AIRCRAFT RETURNED TO GATE. ENGINE POWER ASSURANCE RUN ACCOMPLISHED (TEST 1 ## STCs that may be installed (OpenAirDocs) None matched to this aircraft's models. ## Earlier aircraft with N521NA The FAA can reassign an N-number once a registration is cancelled. These aircraft carried N521NA before. - [Cancelled 2012-02-15](https://openairdocs.org/deregistered/N521NA-2012-02-15): Air ATR72, S/N 521. Exported to Colombia. Owner: [Wells Fargo Bank Northwest Na Trustee](https://openairdocs.org/faa-owner/WELLS%20FARGO%20BANK%20NORTHWEST%20NA%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City) - [Cancelled 1974-07-31](https://openairdocs.org/deregistered/N521NA-1974-07-31): Hawker Siddeley XV-6A, S/N 6418263. Owner: [Nasa Langley Research Center](https://openairdocs.org/faa-owner/NASA%20LANGLEY%20RESEARCH%20CENTER), [Hampton, VA](https://openairdocs.org/faa-place/VA/Hampton) ## Related - Other Zipline International P2 ZIP aircraft: https://openairdocs.org/model/zipline-international-p2-zip/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.