YL-37 was manufactured in Bridgeport, Connecticut in 1961. She served in Vietnam for 1965-1968. Designated as UH-34D, YL-37 is a Sikorsky helicopter with documented combat history assigned with the United States Marine Corps. YL-37 survived intact and returned home to become a flying memorial to all Vietnam Veterans who perished and to those that survive.
During the numerous missions she flew, YL-37 was fired upon many times by the Vietcong. Once she was disabled to the point that she had to be carried out of the crash zone by a CH-53. Today, YL-37 wears fifty-four patches over bullet holes and shrapnel damage sustained in Vietnam. YL-37 operated out of every major air base in the I-Corps quadrant. YL-37 also operated at sea aboard the LPH Okinawa and the LPH Princeton in support of the war effort in South Vietnam. A multitude of her landing included hillsides, rice paddies, and field combat bases while supporting the diverse needs of America’s Military forces. At other times, she carried wounded to medical support areas which included the “Hospital Ship, Repose” cruising off shore.
This rare aircraft served with 1st Marine Air Wing with squadron HMM-362 (first in and last out) known as the “Ugly Angels”. On her side, you will see a bronze plaque that she proudly wears with the names of thirty-three Marines of the “Ugly Angels”, who gave their lives in Vietnam in service to our country.
The historic YL-37, is flown today with some of her surviving crew members, bringing to life the role in history she played to a new generation of young people, as a part of the “hands on” educational process.




Gerald & Lillian Hail : Guardians of YL-37’s Legacy
The story of YL-37’s second life begins with two extraordinary people—Gerald and Lillian Hail, a husband-and-wife team whose love of aviation and respect for military service changed countless lives.
Years after the Vietnam War had ended, Gerald discovered an old, forgotten UH-34D helicopter in a military boneyard—weathered, worn, and nearly lost to history. But this wasn’t just any aircraft. This was YL-37, a helicopter that had once flown dangerous missions with Marine squadron HMM-362—the “Ugly Angels”—in the jungles of Vietnam.
Where others saw scrap, Gerald and Lilly saw a story that deserved to be told.
With unwavering dedication, they rescued YL-37 from the boneyard and began a painstaking process of restoration. It was a labor of love—every bolt, every panel, every detail carefully brought back to life. Their goal wasn’t just to restore an aircraft—it was to honor the brave Marines who had flown in her, relied on her, and sometimes didn’t come home.
What followed was nothing short of remarkable.
YL-37 didn’t just fly again—she became a symbol of healing, remembrance, and brotherhood. Gerald and Lilly used her to reunite veterans who hadn’t seen each other in decades. She brought together Marines who once flew side by side in combat, many for the first time since Vietnam. She gave families a chance to connect with the legacy of their loved ones—and helped a new generation understand the sacrifices of those who served.
Thanks to the Hails’ vision and tenacity, YL-37 transformed into more than a helicopter. She became a flying memorial, a vessel of stories, and a bridge between the past and the present.
Though Gerald and Lillian have since passed on the stewardship of YL-37, their legacy lives on in every mission, every event, and every life she touches.
Their story reminds us that honoring history doesn’t always happen in museums—it sometimes takes flight, carried by the hearts of those who believe in keeping memories alive.
Pilots of YL-37
NAME | DATE | FLIGHT HOURS | # LANDINGS | FLIGHT CODE | NOTES |
ROGER COOK | 6-22-66 | 1.7 | 2 | ||
6-23-66 | 3.5 | 6 | |||
6-26-66 | 0.6 | 1 | |||
6-30-66 | 5.6 | 3 | |||
8-11-66 | 0.7 | 1 | |||
9-9-66 | 1.5 | 5 | |||
TOTAL TIME | 13.6 | ||||
RUSTY SACHS | 9-21-66 | 1.7 | 7 | 1R9 | |
9-22-66 | 1.5 | 7 | 1R9 | ||
9-28-66 | 0.5 | 1 | 1R7 | ||
10-12-66 | 7.2 | 18 | 1R4 | ||
10-16-66 | 0.1 | 1 | 1R4 | ||
10-19-66 | 2.2 | 1 | 1R4 | ||
11-17-66 | 3.1 | 1 | 1A1 | ||
12-01-66 | 1.5 | 12 | 1R4 | ENGINE FAILURE | |
1-7-67 | 0.2 | 1 | 1L | IWO JIMA | |
1-10-67 | 0.6 | 1 | 1R7 | WHITE BEACH | |
1-10-67 | 1.1 | 1 | 1R7 | IWO JIMA | |
1-15-67 | 0.5 | 1 | 1L | IWO JIMA | |
1-28-67 | 1.7 | 2 | 1R7 | KY HA | |
1-28-67 | 1.0 | 1 | 1R6 | KY HA | |
2-1-67 | 0.5 | 1 | 1R4 | KY HA | |
2-5-67 | 2.7 | 3 | 1R7 | KY HA-QUANG NON-KY HA | |
2-24-67 | 2.6 | 3 | 1R7 | KY HA-DA NANG | |
3-21-67 | 1.4 | 5 | 1R6 | KY HA | |
3-24-67 | 5.1 | 2 | 1R7 | KY HA-MARBLE MOUNTAIN | |
4-20-67 | 2.8 | 3 | 1R7 | KY HA-CHU LAI | |
4-21-67 | 1.7 | 8 | 1R7 | KY HA-CHU LAI | |
4-22-67 | 0.1 | 3 | 1R7 | CHU LAI-KY HA | |
4-29-67 | 1.3 | 1 | 1R6 | KY HA-CHU LAI | |
4-30-67 | 0.1 | 1 | 1R6 | CHU LAI | |
5-24-67 | 5.0 | 6 | 1R7 | KY HA | |
7-1-67 | 1.5 | 1 | 1A4 | LCH-3 | |
7-8-67 | 5.6 | 1 | 1R9 | LCH-3 | |
TOTAL TIME | 55.1 | ||||
LARRY TURNER | 6-5-66 | 0.2 | 3 | 1L | |
6-11-66 | 0.3 | 1 | 1L | ||
6-11-66 | 0.2 | 1 | 1L | ||
7-10-66 | 0.8 | 1 | 1R5 | ||
7-28-66 | 0.4 | 3 | 1L | ||
7-29-66 | 1.4 | 4 | 1R7 | ||
8-3-66 | 0.3 | 6 | 1L | ||
8-6-66 | 0.2 | 1 | 1L | ||
TOTAL TIME | 3.8 | ||||
JACK LODGE | 6-13-66 | 1.4 | 3 | 1R5 | |
7-9-66 | 2.0 | 4 | 1R7 | ||
7-23-66 | 2.0 | 4 | 1R7 | ||
7-31-66 | 0.8 | 1 | 1R7 | ||
8-19-66 | 1.3 | 2 | 1R5 | ||
8-26-66 | 1.0 | 2 | 1R7 | ||
8-29-66 | 0.8 | 1 | 1R5 | ||
9-5-66 | 4.2 | 6 | 1R7 | ||
TOTAL TIME | 12.9 | ||||
RON HEALD | 5-20-66 | 1.6 | 1R5 | ||
6-25-66 | 0.5 | 1R7 | MSN #1824J | ||
TOTAL TIME | 2.1 | ||||
CHUCK TRAVIS | 7-12-67 | ||||
9-3-67 | |||||
9-20-67 | |||||
DAVE LUHRSEN | 5-14-66 | 0.2 | INITIAL TEST HOP AT DA NANG | ||
6-19-66 | 1.2 | HAIRY RECON RETRACTION UNDER FIRE FROM 3 AUTOMATIC WEAPONS | |||
6-23-66 | 3.5 | DIRECT SUPPORT MISSION FROM TAM KY | |||
6-30-66 | 3.3 | ESCORTED KD 4-25 (TWO HOLES) ON RETRACTION | |||
7-3-66 | 2.5 | RECEIVED FIRE FROM 50 CAL | |||
7-10-66 | 0.6 | A “NOTHING” HOP | |||
7-22-66 | 6.2 | ELEVEN MEDEVACS OUT OF DANANG INCLUDING DOUBLE AMPUTEE WHO STEPPED ON MINE; AUSSIE W/ GUT WOUND; PREGNANT WOMAN SHOT IN THE BACK; CHILDREN OPERATION HASTINGS – 500 VC KIA | |||
8-8-66 | 1.7 | TWO LANDINGS ON HOSPITAL SHIP REPOSE W/ MEDEVACS. ALSO HAULING ROCKETS TO QUANG TIN FOR OVERNIGHT DIRECT SUPPORT STANDBY. OPERATION COLORADO COMMENCED INCLUDING 90 PLANE GAGGLES. SIX MEDEVAC MISSIONS FROM KY HA. PULLED OUT 7 FROM A HILLTOP SOUTH. DISCOVERED LIVE GRENADE W/ PIN PULLED ON ONE OF THE MARIENS. CALLED KD SO THEY’D KNOW TO CALL MOMMA IF WE BLEW UP. | |||
8-9-66 | 2.3 | SAR AT CHU LAI AND INSTRUCTIONAL HOP W/3 TRIPS TO REPOSE | |||
8-10-66 | 0.2 | BACK TO KY HA FROM SAR. FOOTNOTE: OPERATION COLORADO EXPLODED. CO FROM 1/5 ATTACKED BY VC @BT2323. LAITALA, LEE, SHEEHAN, BRACY AND WILLUMIER PULLED OUT 100 MEDEVACS UNDER INTENSE FIRE. SGT JENSEN WOUNDED (DFC’S, SILVER STAR) | |||
TOTAL TIME | 21.7 | ||||
CARL B WHEELER | 5-24-66 | 1.5 | 3R5 | ||
7-28-66 | 3.3 | 1RC | |||
7-29-66 | 2.3 | 1R7 | |||
7-29-66 | 2.6 | 1R5 | |||
7-30-66 | 1.1 | 3R6 | |||
7-31-66 | 0.4 | 3R6 | |||
9-2-66 | 2.5 | 1R5 | |||
9-5-66 | 4.2 | 1R7 | |||
9-11-66 | 3.7 | 1R7 | |||
9-26-66 | 0.6 | 1L | |||
12-12-66 | 1.8 | 1R4 | |||
1-7-67 | 0.2 | 1L | |||
1-12-67 | 0.5 | 1L | |||
1-13-67 | 0.2 | 1L | |||
1-26-67 | 1.5 | 1R7 | |||
1-26-67 | 1.3 | 1R7 | |||
2-14-67 | 0.4 | 1L | |||
3-15-67 | 1.6 | 1R8 | |||
3-16-67 | 0.2 | 1Q | |||
3-21-67 | 0.4 | 1L | |||
4-15-67 | 0.2 | 1L | |||
4-25-67 | 3.2 | 1R7 | |||
5-8-67 | 0.4 | 1L | |||
5-15-67 | 0.2 | 1L | |||
TOTAL TIME | 34.3 | ||||
JOEL VIGNERE | 5-24-66 | 0.9 | 5 | 1R5 | KY HA |
6-26-66 | 1.7 | 3 | 1R7 | #1919 & 1909 KY HA | |
6-8-66 | 0.4 | KEN MACBETH KIA’D | |||
7-5-66 | 1.2 | 2 | 1R5 | KY HA | |
9-2-66 | 2.2 | 5 | 1R5 | KY HA | |
9-2-66 | 0.4 | 2 | 3R6 | #177G KY HA | |
11-2-66 | 1.0 | 2 | 1R7 | 1 CARRIER, LPH2 (VALLEY FORGE, I BELIEVE) | |
11-16-66 | 2.1 | 2 | 1A2 | NAS CUBIC | |
12-16-66 | 0.2 | 1 | 1R4 | 1 CARRIER CUBI/LPH7 -IWO JIMA | |
1-27-67 | 0.1 | 1 | 1R7 | KY HA | |
2-1-67 | 3.9 | 5 | 1R6 | #52G KY HA | |
2-2-67 | 6.3 | 8 | 1R7 | #75, 54E AND H KY HA | |
2-24-67 | 2.6 | 5 | 1R7 | #98 & 93 KY HA -DANANG | |
3-11-67 | 1.0 | KY HA | |||
4-13-67 | 3.6 | 6 | 1R7 | KY HA | |
4-20-67 | 2.8 | 2 | 1R7 | KY HA-PHU BAI & RETURN | |
TOTAL TIME | 30.0 | ||||
RON FIX | 9-2-66 | 2.5 | 2 | 1R5 | #208 B&C |
10-18-66 | 3.0 | 10 | 1R4 | ||
12-12-66 | 1.8 | 10 | 1R4 | CUBI | |
1-24-67 | 5.0 | 6 | 1R7 | QUANG NGAI-KY HA | |
2-11-67 | 0.5 | 2 | 1R7 | QUANG NGAI-KY HA | |
2-11-67 | 1.1 | 3 | 1R7 | KY HA-LZ PENGUIN | |
2-23-67 | 0.5 | 1 | 1R6 | KY HA -QUANG NGAI | |
2-24-67 | 0.4 | 1R6 | QUANG NGAI0KY HA #71 | ||
2-27-67 | 3.9 | IN/7 | 1R9 | KY HA – NUI DANG | |
3-19-67 | 2.2 | 3 | 1R7 | 54D, G | |
5-5-67 | 0.6 | 1 | 3R6 | KY HA | |
5-21-67 | 5.0 | 16 | 1R7 | KY HA | |
6-17-67 | 2.0 | 8 | 1R7 | KY HA | |
TOTAL TIME | 28.5 | ||||
ROBBIE ROBERTSON | 9-20-67 | 0.3 | 1 | 1R6 | TEST |
9-28-67 | 1.9 | 2 | 1R7 | PHU BAI | |
9-29-67 | 4.6 | 2 | 1R9 | PHU BAI/KHE SANH | |
9-30-67 | 6.1 | 3 | 1R9 | KHE SANH | |
10-1-67 | 1.1 | 3 | 1R9 | KHE SANH/PHU BAI | |
10-2-67 | 1.8 | 1 | 1R9 | PHU BAI | |
6-7-68 | 3.7 | 7 | 1R9 | PRINCETON | |
7-11-68 | 6.9 | 14 | 1R9 | PHU BAI | |
7-13-68 | 6.5 | 14 | 1R9 | PHU BAI | |
7-15-68 | 6.0 | 9 | 1R9 | PHU BAI | |
8-4-68 | 2.4 | 3 | 1R7 | PRINCETON | |
8-9-68 | 4.5 | 6 | 1R7 | PRINCETON | |
8-24-68 | 3.6 | 8 | 1R9 | LPH-5 | |
TOTAL TIME | 49.4 | ||||
WALTER SHAUER | 2-29-68 | 1.3 | 2 | 1R7 | PHU BAI |
3-1-68 | 3.8 | 4 | 1R9 | PHU BAI | |
3-2-68 | 2.1 | 7 | 1R6 | PHU BAI | |
3-4-68 | 9.5 | 32 | 1R9 | PHU LOC -PHU BAI | |
3-5-68 | 2.2 | 8 | 1R6 | PHU BAI | |
3-5-68 | 1.2 | 2A2 | PHU BAI | ||
3-6-68 | 4.9 | 13 | 1R9 | PHU BAI | |
3-7-68 | 1.6 | 11 | 3R6 | ||
3-8-68 | 5.6 | 11 | 1R9 | ||
3-11-68 | 1.4 | 1 | 1R9 | ||
3-12-68 | 3.6 | 8 | 1R9 | ||
3-13-68 | 1.4 | 2 | 1R7 | ||
3-13-68 | 4.1 | 10 | 1R9 | ||
3-14-68 | 2.5 | 8 | 1R5 | ||
3-14-68 | 1.7 | 3 | 1R7 | ||
3-14-68 | 0.5 | 1 | 1R9 | ||
3-15-68 | 1.9 | 3 | 1R9 | ||
3-16-68 | 1.4 | 6 | 1R5 | ||
3-17-68 | 7.3 | 20 | 1R6 | ||
3-18-68 | 3.5 | 3 | 3R6 | ||
3-19-68 | 0.6 | 1 | 1R6 | ||
3-19-68 | 2.3 | 3 | 1R7 | ||
3-19-68 | 0.8 | 1 | 1R7 | ||
3-21-68 | 0.9 | 1 | 1R7 | ||
3-24-68 | 6.3 | 5 | 1R9 | ||
3-25-68 | 0.7 | 2 | 1R9 | ||
3-25-68 | 3.3 | 5 | 1R9 | ||
3-26-68 | 1.7 | 2 | 1R9 | ||
3-26-68 | 0.7 | 1R7 | |||
3-26-68 | 0.5 | 1R7 | |||
3-26-68 | 6.3 | 8 | 1R9 | ||
3-28-68 | 1.2 | 2 | 1R6 | ||
3-28-68 | 0.7 | 1R7 | |||
3-28-68 | 1.8 | 1 | 1R6 | ||
3-29-68 | 0.5 | 1 | 1R7 | ||
3-29-68 | 1.0 | 1 | 1R7 | ||
3-30-68 | 0.5 | 1R7 | |||
3-30-68 | 1.6 | 2 | 3R6 | ||
3-31-68 | 7.0 | 8 | 2R6 | ||
4-1-68 | 1.2 | 2 | 1R7 | ||
4-2-68 | 1.6 | 3 | 1R7 | ||
4-3-68 | 2.0 | 2 | 1R7 | ||
4-5-68 | 1.9 | 1 | 1R9 | PHU BAI | |
4-6-68 | 6.1 | 4 | 1R9 | PHU BAI | |
4-7-68 | 1.2 | 1 | 1R7 | PHU BAI | |
4-8-68 | 2.6 | 4 | 1R9 | PHU BAI | |
4-9-68 | 7.5 | 4 | 1R9 | PHU BAI | |
4-11-68 | 0.5 | 1 | 1R6 | PHU BAI | |
4-13-68 | 2.6 | 1 | 1R9 | IWO JIMA | |
4-14-68 | 0.6 | 1R9 | PHU BAI | ||
4-15-68 | 1.3 | 1 | 1R9 | IWO JIMA | |
4-17-68 | 9.1 | 5 | 1R9 | IWO JIMA | |
4-19-68 | 6.1 | 4 | 1R9 | IWO JIMA | |
4-20-68 | 3.7 | 1 | 1R9 | IWO JIMA | |
4-23-68 | 6.2 | 3 | 1R7 | COL ETHRIDGE COS 9TH MAB | |
4-26-68 | 3.0 | 5 | 1R7 | IWO JIMA | |
4-30-68 | 5.0 | 2 | 1R9 | IWO JIMA | |
4-30-68 | 1.9 | 6 | 1R6 | IWO JIMA | |
5-3-68 | 5.2 | 9 | 1R9 | IWO JIMA | |
5-4-68 | 4.7 | 5 | 1R7 | IWO JIMA | |
5-7-68 | 1.2 | 1 | 1R6 | IWO JIMA | |
5-8-68 | 6.2 | 5 | 1R9 | IWO JIMA | |
5-9-68 | 3.3 | 3 | 1R9 | IWO JIMA | |
5-10-68 | 5.8 | 9 | 1R9 | IWO JIMA | |
5-11-68 | 4.0 | 6 | 1R7 | IWO JIMA | |
5-15-68 | 3.8 | 8 | 1R9 | IWO JIMA | |
6-5-68 | 4.3 | 3 | 1R6 | PRINCETON | |
6-7-68 | 1.0 | 6 | 3R6 | PRINCETON | |
6-8-68 | 8.0 | 18 | 1R9 | PRINCETON | |
6-10-68 | 7.2 | 5 | 1R9 | PRINCETON | |
6-10-68 | 1.4 | 2 | 3A4 | PRINCETON | |
6-11-68 | 6.4 | 6 | 1R6 | PRINCETON | |
6-12-68 | 6.6 | 8 | 1R9 | PRINCETON | |
6-13-68 | 4.2 | 5 | 1R7 | PRINCETON | |
6-14-68 | 7.9 | 8 | 1R9 | PRINCETON | |
6-17-68 | 1.9 | 2 | 1R7 | PRINCETON | |
6-19-68 | 4.8 | 4 | 1R9 | PRINCETON | |
6-22-68 | 7.3 | 8 | 1R7 | PRINCETON | |
7-6-68 | 5.5 | 9 | 1R7 | PRINCETON | |
7-10-68 | 3.6 | 5 | 1R9 | PHU BAI | |
7-12-68 | 6.6 | 10 | 1R9 | PHU BAI | |
7-14-68 | 7.8 | 5 | 1R9 | PHU BAI | |
7-25-68 | 5.8 | 5 | 1R9 | PRINCETON | |
8-5-68 | 5.3 | 16 | 1R9 | PRINCETON | |
8-6-68 | 5.7 | 7 | 1R7 | PRINCETON | |
TOTAL TIME | 299.5 | ||||
CHUCK BOWERS | 2-27-68 | 1.0 | 1J | PHU BAI-DANANG DAYLIGHT FERRY | |
3-7-68 | 1.6 | 3R6 | PHU BAIR NIGHT MEDEVAC | ||
4-8-68 | 2.6 | 1R9 | PHU BAI RESUPPLY | ||
5-14-68 | 3.2 | 1R9 | LPH IWO JIMA DAY RESUPPLY | ||
7-5-68 | 6.4 | 1R9 | LPH PRINCETON DAY RESUPPLY | ||
7-8-68 | 5.3 | 1R7 | PHU BAI DAY RESUPPLY | ||
7-21-68 | 3.6 | 1R7 | PHU BAI DAY LIAISON | ||
7-28-68 | 3.5 | 1R7 | LPH PRINCETON DAY LIAISON | ||
9-10-68 | 2.2 | 1R6 | MARBLE MOUNTAIN DAY MEDEVAC | ||
TOTAL TIME | 29.4 |