# N684HA: Gates Learjet 35A, registration cancelled 2015-05-19

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 19, 2015
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Gates Learjet 35A](https://openairdocs.org/model/gates-learjet-35a) (registry code 5170602)
- Engine: [NONE](https://openairdocs.org/engine/none) (registry code 00000)
- Data sheets: [TCDS A10CE](https://openairdocs.org/tcds/A10CE) (OpenAirDocs)
- Serial number: 113
- Type of aircraft: Fixed wing multi engine
- Engine type: None
- Airworthiness: Standard, transport
- Airworthiness date: March 31, 1977
- Certificate issued: September 14, 2009
- Last registry action: September 14, 2009
- Mode S code: A912C3
- Owner when cancelled: [West Star Aviation Inc](https://openairdocs.org/faa-owner/WEST%20STAR%20AVIATION%20INC)
- Location: [Grand Junction, CO](https://openairdocs.org/faa-place/CO/Grand%20Junction)
- Owner type: Corporation
- Owner's area on the map: 39.1249° N, 108.5587° W: Placed by OpenAirDocs at the center of ZIP code 81506, within about 3 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N684HA
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=684HA
- Page: https://openairdocs.org/deregistered/N684HA-2015-05-19

From the FAA registry file of October 29, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Gates Learjet 35A: https://openairdocs.org/model/gates-learjet-35a.md

## Service difficulty reports (6)

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR BSYA2009046](https://openairdocs.org/sdr/BSYA2009046), Sep 2, 2009: SEAL. WORN. AFTER TAKEOFF OUT OF LCK THE LEFT BLEED AIR CAME ON AND A FEW MINUTES LATER THE RIGHT BLEED AIR LIGHT CAME ON, PILOT THEN ELECTED TO RETURN TO LCK. MAINTENANCE 
- [SDR BSYA2009005](https://openairdocs.org/sdr/BSYA2009005), Jan 21, 2009: SWITCH. OUT OF ADJUST. AFTER TAKEOFF OUT OF LCK PILOT SELECTED GEAR UP, AFTER GEAR CAME UP ALL THREE GEAR UNSAFE LIGHTS STAYED ON. PILOT RETURNED TO LCK. MAINTENANCE FOUND THE LEFT TH
- [SDR BSY2001F00012](https://openairdocs.org/sdr/BSY2001F00012), Sep 9, 2001: HYDRAULIC LINE. LEAKING. (CMH) LOST HYDRAULIC PRESSURE COMING INTO AIRPORT, BLEW GEAR DOWN LANDED OK. REPAIRED HYDRAULIC LINE. NOSE WHEEL WELL, SERVICED RES. CHANGED BOTH PUMPS AS PRECA
- [SDR BSY2001F00013](https://openairdocs.org/sdr/BSY2001F00013), Sep 4, 2001: ENGINE. LEAKING. (ATL) IN ROUTE FROM (BNA) TO (ATL) LOST OIL PRESSURE, RIGHT ENGINE. SHUT ENGINE DOWN LANDED AT (ATL). HAD GARRETT FROM AUGUSTA LOOK AT ENGINE, HAS MAJOR OIL LEA
- [SDR 99ZZZX4444](https://openairdocs.org/sdr/99ZZZX4444), Oct 25, 1999: TRANSMITTER. FLUCTUATED. CMH - LEFT RING OIL PRESSURE FLUCTUATING. RETURNED TO COLUMBUS. REMOVED AND REPLACED OIL PRESSURE TRANSMITTER. OPS CHECKED GOOD.
- [SDR 97ZZZX1653](https://openairdocs.org/sdr/97ZZZX1653), Feb 13, 1997: ACTUATOR. MALFUNCTION. AIRCRAFT WAS ON RETURN LEG - PART 91, NO PASSENGERS, WHEN THE CREW EXPERIENCED DIFFICULTY LOWERING THE LT MAIN GEAR (NO DOWN AND LOCK INDICATORS). CREW MADE 2 A

## 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.

- [Incident 19971223043609I](https://openairdocs.org/incident/19971223043609I), Dec 23, 1997: Lear 35A (N684HA), Sioux Falls, SD. Narrative: during cruise flight at FL 390, aircraft began losing pressurization. Pilot requested descent to FL 210. The aircraft was still not maintaining…
- [Incident 19930529023809I](https://openairdocs.org/incident/19930529023809I), May 29, 1993: Lear 35A (N684HA), Windsor Locks, CT, Minor damage. Aileron problem after takeoff. Returned. Left tip tank touched ground and right wheel landed on grass beside runway

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